One evening, Leo and Maeve walked into the lab to see Adam at the cyberdesk.

"Hey! Hey, what are you doing?" Leo asked. "You know you're not supposed to be alone around anything with buttons."

"I'm pranking Chase for April Fools," Adam responded.

"It's November," Maeve said.

"Yeah, exactly. April's when people expect to be pranked. But if I do it today, whammo!" Adam explained. "It's like a baby with a mustache. You don't see it coming."

"So what's the prank?" Leo asked.

Adam laughed. "I rigged Chase's capsule so when he steps in, he'll be showered by 50 gallons of expired milk! Oh, 49 gallons. I needed something for my cereal."

"Adam, don't you think that's kinda mean?" Maeve said.

"Relax, he'll be fine. You're just lucky I didn't go with the idea to dump live spiders on him," said Adam. "That would just be mean to the spiders."

Leo grimaced. "Where did you get 50 gallons of expired milk anyways?"

"Oh, it doesn't come that way. You have to buy 50 gallons of milk and wait," Adam answered.

"I think that might have been the most thought you've put into... well, anything," Maeve said. Leo and Adam nodded.

The doors to the lab opened.

"Oh, here he comes! Act cool!" Adam leaned against the cyberdesk.

"I don't need to act. It's in my blood, baby," said Leo.

Instead of Chase, Bree walked in.

"Let me guess: pranking Chase again?" she asked.

"No." Adam laughed. "Yeah."

Bree scoffed. "Adam, you are so immature."

"Eh, I've been called worse," he said.

"Alright, well, I'm going to bed," Bree said, turning to Maeve. "Wake me up when I'm old enough to move out."

Maeve gave her a thumbs-up as Bree stepped into her capsule. Just as Bree closed the door, she was drenched in a cascade of expired milk. Leo and Adam's jaws dropped. Maeve covered her mouth with her hands in shock.

"Oh, Chase's capsule is the one in the middle!" Adam said.

"What the fuck?!" She exclaimed.

"Sorry, Bree, that was meant for Chase," Adam shrugged. Maeve moved over to help Bree out of her capsule, holding her breath at the stench of the milk.

"I can't believe this, Adam. How could you?" Bree groaned.

"It was an accident. But for the record, I think this might have been one of the best pranks I've ever done!"

"Adam, seriously?" Maeve frowned. "Bree, go shower. I'll make sure Adam cleans up your capsule."

Bree, frustrated, left for the bathroom. While she was gone, Maeve instructed Adam to clean up the mess.

Around half an hour later, Bree returned with wet hair and fresh pajamas. "I cannot get the taste of that milk out of my mouth."

Maeve's face contorted and she motioned for Bree to sit down. She helped Bree comb through her hair, searching for the milk chunks.

As Adam continued sgueegeeing Bree's capsule, Leo sprayed air freshener at her.

Chase walked into the lab and laughed. "Rigged the wrong capsule again, Adam?"

"...Maybe?" Adam answered.

Donald and Tasha then walked in.

"What happened in here?" Donald asked, shocked. "And why does my lab smell like a locker room at a gym that only cows go to?"

Tasha looked at Bree. "Honey, who did this to you?"

"Who do you think?!" Bree gestured at her brothers.

"Wow, ruining pranks and blaming others. Not making any friends today, are you, Bree?" Adam said. Chase nodded with him and Maeve glared.

"Grandma Rose is visiting tomorrow and I want this behavior to stop. You three go get the cleaning supplies. Now!" She instructed Adam, Leo, and Chase.

Bree sighed. "I am so sick of getting caught in their crossfire. Last week, Chase was pranking Adam, and I ended up in a pet store window!"

Donald laughed. "That's funny!" He said, upon seeing Tasha and Maeve's angry stares. "Look, I will talk to them. I will lay down the law."

"Thank you," Tasha said, rolling her eyes before leaving.

Donald turned to Bree and Maeve. "Look, don't tell Tasha I told you this, but the only way you're gonna get them to stop is to fight fire with fire. You have to prank them, and you have to prank them hard."

Bree smiled. "Do you really think that'll work?"

"Oh, definitely," Donald nodded. "Although I would act fast because I know for a fact that Adam had a barrel full of expired meat that he is dying to use."

-

The following afternoon, Maeve and Bree moved around the lab, setting up various pranks for the boys. To finish it off, they wiped the floor with grease. When they heard the lab doors open, they scurried behind the table to act like they were just hanging out.

Chase and Adam walked in.

"Oh, uh, hey, guys. What are you up to?" Bree asked.

"Six feet, two inches!" Adam grinned. He turned to Chase. "Oh, you don't have to answer. I know growing's been a lifelong struggle for you."

Chase scanned the room. "Wait a second. Whoopee cushion, bucket of ice water, greased floor. Nope, nothing suspicious here."

Adam nodded. "Seriously, do you think I was born tomorrow?"

The boys approached Maeve and Bree.

Bree groaned. "I hate you guys. But I am so gonna get you back."

"Oh, please, by all means, keep trying. Your failure is adorable," Chase smiled.

"Nice, Chase," Maeve said sarcastically. Upon seeing her disappointment, his smile dropped.

Chase's phone then beeped. He looked at it. "Uh oh! Urgent mission alert! There's a lethal virus outbreak in Denver! Bree, you have to super-speed there ahead of us or we'll be too late!"

"On it!" Bree said. As she ran across the lab, she slipped on the greased floor. Adam and Chase laughed, and Maeve hit Chase lightly on the chest before going to help Bree up.

"Ha! I set up a fake mission alert!" Chase gloated. "I knew you'd fall for it."

"Good one!" Adam grinned. "Now stop messing around. We gotta get to Denver." He ran out of the lab.

Chase rolled his eyes. "Face it, guys. You'll never outwit the masters."

"Run along, Chase," Maeve frowned. Chase left the lab.

Donald walked in, laughing. "So, you tried to prank the boys and it blew up in your face."

"Is it that obvious?" Bree asked.

"No, I was watching from upstairs. Man, you really ate it!"

"Well, yeah. It's just not in my nature to be stupid and immature," Bree explained.

"Well, good thing it's in mine!" Donald smiled. "I'm gonna help you out because when it comes to pranks, I am the undisputed champ."

"By whose standards?" Maeve raised her eyebrows.

"I'll have you know, in college I won the official prank war in my dorm," Donald said.

Bree rolled her eyes. "'Help me out'? Is that your nice way of saying you're gonna do the whole thing by yourself while Maeve and I sit there and watch?"

"No, I wasn't trying to be nice. You guys are really terrible at this."

-

The next day, Donald called Bree and Maeve into the living room.

"Okay, this is gonna be great! I hid a high-powered airbag inside the couch cushion. As soon as Adam and Chase sit down for their after-school video games, boom! They're gonna be airborne!" Donald laughed.

"Wait, isn't this dangerous?" Bree questioned. "Please say yes!"

Maeve and Bree giggled to one another.

"This is going to be the greatest prank ever!" Donald said.

"Woah, prank?" a voice said. Adam was walking into the kitchen, followed by Chase. "What prank?"

"Wha- no, not prank. I didn't say prank," Donald scoffed. "I was talking about my friend Frank, actually. You've never met him. Big guy. German. Enormous toes."

Maeve and Bree nodded.

"Oh, please, give us a break," Chase rolled his eyes. "We know you're trying to help the girls get back at us, and it's not gonna work."

"Wait, if his toes are that big, I really need to meet him," Adam said to Donald.

"Abort prank! Abort prank!" Donald hissed to Maeve and Bree.

"Just cause you say it out of the side of your mouth does not mean we can't hear you," Chase said.

At that moment, Leo and his Grandma Rose entered the living room.

"...Are you saying that you would rather spend time with her than me?" Rose was saying.

"No, you said it," Leo said, closing the door. "But yes."

Rose gasped dramatically, clutching her heart. "Oh, this could be the big one! I need to sit down." She walked over to the couch.

"Wait, no!" Maeve and Bree yelled, but it was too late. When Rose sat down, she was immediately launched into the air and then fell back down. The family rushed around her.

"Rose, are you okay?" Donald asked.

"Do I look like I'm okay?!" Rose snapped. She was collapsed on the ground and her hat had ripped over her head.

Donald and Leo ran to help her up while Chase got Tasha. Tasha and her mother left to go to the hospital.

-

The rest of the family waited in the living room until finally, they heard a car pull up. Tasha opened the door, followed by Rose on crutches.

"Grandma!" Leo said in relief, rushing to hug Rose.

"Oh, hey, sugar, I'm okay," she said.

"Rose..." Donald started.

Rose whacked him in the leg with one of her crutches. "Get away from me! Can't you see I'm in pain?!"

"We're luck it was just a sprained ankle," Tasha frowned at Adam and Chase. "You two are in big trouble! An airbag in my sofa?"

"It wasn't us!" Chase stammered.

"Don't do it, don't do it..." Donald muttered, slowly backing away.

"It was Mr. Davenport!" Adam pointed at Donald, who grunted in frustration.

"Donald, is that true?" Tasha asked.

"Look, what happened was- there comes a moment- it- it was all Bree!" He exclaimed.

"Excuse me?" said Bree.

"Oh, no way," Maeve shook her head. "You are not putting this on her right now."

Tasha glared at her husband. "What happened? You said you were going to lay down the law. You lied to me."

"Oh, he lies to you about a lot," Adam remarked.

"I was just trying to teach them a lesson," Donald said.

"What lesson?" Tasha asked.

"Uh..." Donald looked around. "The principles of flight?"

"Well, since Grandma won't be able to get around for two weeks, you're gonna be waiting on her, hand and foot!" Tasha said to him.

"What?!" Donald cried.

"Yep!" said Rose. "That hand, this foot. Now prop me up with that pillow."

Donald sighed and reached for the pillow.

"Today! Come on!" Rose ordered. "Give me that blanket. Where's my soup?!"

"Yeah, where's her soup?" Leo echoed, and Donald stared at him. "I'm sorry, I just got carried away. I'm having way too much fun with this."

-

The next day, Maeve and Bree walked home from school together.

"We need to find a way to really get back at them," said Bree.

"I know. I've just never been good at pranks," Maeve frowned.

"Me neither. I always accidentally give it away."

"Yeah," Maeve nodded. "I mean, even when I was younger, it was always Marcus who came up with the best plans."

Bree put a hand on Maeve's shoulder. Maeve smiled at her.

"Anyways," said Maeve, "you're right. What can we do that will really prank them?"

"I don't know. Maybe we could fill their capsules with crickets."

"Oh my God," Maeve smiled a little. "I don't know, I feel like that's a little intense."

"Oh, right. I keep forgetting that, for some odd reason, you like Chase."

Maeve stopped walking. "What? No I don't."

Bree scoffed playfully. "Really?"

"Really, I don't- I mean, he's good as a friend, I guess."

"Alright, whatever you say, Maeve." Bree rolled her eyes as the two approached the house. The girls walked through the door to see Adam and Chase sitting on the couch, playing video games.

"Oh, hey, Bree, could you grab me a water?" Adam asked. "I'm trying to beat Chase's high score, and if I stop, his cyborg will melt me, and if that happens, a nuclonium bomb will go off, and if that happens-"

"I will get your water! Just stop talking," Bree groaned, heading over to the fridge.

Tasha entered the kitchen, reaching to open the refrigerator door. "Hey, guys! What do you want for dinner?"

Adam and Chase jumped up from the couch.

"No! Don't open the-" Chase yelled, a second too late. Tasha opened the fridge and was blasted with ketchup, mustard, and mayonnaise. Bree and Maeve exchanged glances as Tasha turned to the boys, seething.

"Would it help at all if we said that was supposed to be Bree's face?" Chase asked. He and his brother laughed nervously.

"But it looks just as good on you!" said Adam.

"I don't care who the prank was for! Go get something to clean this mess up, now!" Tasha exclaimed.

The boys ran off.

"Those boys never learn their lesson," Tasha frowned, wiping some of the ketchup off her face. "Someone else always ends up paying for it."

"Welcome to my world!" said Bree.

"No. I think it's time to welcome them to my world," Tasha smirked.

"Right," agreed Maeve. "What does that mean?"

"It means... nobody makes me a human hot dog," Tasha answered.

"Right! What does that mean?" Maeve repeated.

Donald walked in, smirking. "Hey, look who's trying to cook again!"

Tasha angrily tossed her napkin at him.

-

Tasha, Maeve, and Bree spent the next day planning the optimal pranks for Adam and Chase. As they finished their preparations, Chase and Adam walked into the living room, chatting.

"Oh, hello, boys!" Tasha smiled. She, Bree, and Maeve walked over to the boys with the tray of cookies. "Bree, Maeve, and I decided to make you some homemade cookies."

"They're fresh out of the oven!" Added Bree.

"Mmm! Fresh, stale, hot, cold, just put it in my mouth," Adam said, reaching for the tray.

Chase pulled him back. "Since when has Bree ever made us cookies?"

Adam gasped. "You're right! Thanks a lot, Bree. So kind of you."

Chase rolled his eyes and touched his fingers to his forehead, bionically scanning the cookies.

Maeve and Bree exchanged glances. Chase really was no fun sometimes.

"Just as I suspected," Chase smirked. "Not only were those cookies made with salt instead of sugar, but those chocolate chips aren't chocolate."

"So... caramel?" Asked Adam.

"No," Chase frowned. "You guys are gonna have to try a lot harder than that."

Bree groaned. "Busted again. I give up."

They watched as Chase and Adam walked back over to the couch, grabbing their controllers.

"What an amateur. To think that we would fall for that!" Chase laughed with Adam.

Suddenly, the boys realized their controllers were stuck to their hands.

"Hey, what's the deal?" Chase asked.

"Yeah, I'm stuck," said Adam. "Really, Bree? This is your prank? Glue on the hands?"

"Oh no, I guess we'll have to play more video games," Chase said sarcastically.

"It's gonna be kinda hard to do that from up there," Maeve cocked her head in fake confusion.

"Up where?" Chase scoffed.

Bree grinned and clicked a button on a remote. Immediately, the boys were dragged up by their controllers to a magnetic block hanging from the ceiling.

"Up there!" Bree answered. "Your controllers are made of metallic components, so all we had to do was find a powerful magnet."

"Good thing I married a guy with five floors of expensive techno-junk," Tasha said.

Chase frowned. "Okay, alright. You finally got us. Good job, guys. Can you just put us down?"

"Okay, I'll let you down," Bree smiled. She quickly super-sped away and returned with an inflatable baby pool filled with expired milk and meats. She placed it under her brothers, who grimaced.

"Right down into a pool of your expired milk," Bree finished, clicking the button. Chase and Adam fell down into the pool. They sat up, covered in milk and bits of old meat.

Maeve, Tasha, and Bree laughed.

"Oh, it's disgusting!" Chase groaned.

Adam spit a piece of expired meat from his mouth. "And much chunkier than I remember."

"Yeah, that's cause I found your barrel of expired meat," Bree explained.

Adam groaned. "I was saving that!"

Tasha, Maeve, and Bree high-fived.