([Y/N] = Your name)

"Hey, Glitter Girl." Tony called, as he walked up to [Y/N]. He had his hands behind his back; not a good sign.
"What do you want this time, Sheet Metal?" She replied. She had called him the nickname she had thought of one day after he had annoyed her half to death.
Tony frowned at the nickname." You know, you should really test this thing I made." Tony replied very vaguely.
"If the last person who tested it died, you can count me out." [Y/N] told him, not looking up from her book.
"Nobody's died. Yet. But hey, you make history either way." Tony told her, stealing the book out of her hands and replacing it with a small metal box. [Y/N] sighed.
"What's it do?" She asked, turning it around, examining the smooth metal sides.
"Everything. This baby can hack an entire system, reprogram commercial flights, make expresso, and do your homework. At the same time." Tony explained, seeming proud of his work.
"... Fine. I'll try it. But! You have to let me get a new nickname." [Y/N] said, standing from her chair.
"Deal." Tony agreed. Then he turned and started walking down the hall, leaving [Y/N] to hurry after him.
They stopped in front of his lab. Tony hesitated before opening the door, making her very suspicious. Still, she followed him inside.
"You're not planning anything... Are you?" [Y/N] asked, edging towards the closed door.
"No, no. Not planning anything. Nothing at all." He replied, glancing towards the door behind her.
He was definitely up to something.
"You know, I just remembered. I was going to go get Thor some more Poptarts-"
"I have someone working on that." He cut her off.
Great. She actually has to test the box thing. Please don't explode.
Sighing, she set the box down on a lab table and pressed a button. She ran to the other side of the room and hid behind a piece of equipment.
Slowly, the smell of coffee filled the room and [Y/N] peeked out from her hiding spot. She walked over to the box and picked up two perfectly brewed cups of coffee.
"Congrats. You made a portable coffee maker. I can see it in the headlines: IRON MAN CREATES SIDEKICK." [Y/N] burst out laughing. She took a sip of her coffee and spit it out. It had the taste of metal. Upon inspecting her coffee, she found bits of machinery.
"Your coffee box almost killed me!" [Y/N] shouted at him.
Then it exploded.
"Remind me to never volunteer for your experiments. Ever." She told him, wiping black smears off her face. Tony did the same, a smirk on his face.
"You didn't die." He pointed out, setting the towel on the table next to the ruins of the sad excuse for a coffee maker.
"Princess Sparkle Pants." He added. [Y/N] gave him a deadly glare and chased him around the Tower for the rest of the day.
Meanwhile, Thor was in the kitchen stuffing his face with Poptarts.