Monira:
I dare Pacifica to tickle attack dipper in the middle of the night until he passes out (and Mabel's in on it to) and when he wakes up and asked Pacifica about it she will say it was just a dream

Pacifica: Wow..... Well, I'd be lying if I said this is the weirdest thing I've read in the mail.

Pacifica and Mabel slowly sneaked through the dark room slowly, trying to hold back the laughter. They tip toed over to Dipper, who was passed out from reading the biology of mermaid dust. They where almost at Dipper's bed, when Mabel made a squeak in the floor boards. Suddenly, the lights flashed on and Dipper shot up with a sly look on his face.

Dipper: *Sigh* What does it say?

Pacifica reluctantly hands him the letter and he slowly opens it with a disappointed look. The second Dipper finished, Pacifica shouted-

Pacifica: Now!

Pacifica and Mabel jumped on him and began tickling him non-stop. Dipper laughed and laughed, trying to hold back the forced joy. They where about to give the final blow of tickles, when he built up his strength and jumped away from them. Dipper quickly ran for the door, obviously having fun.

Mabel: Hurry! He's almost at the door!

Pacifica and Mabel ran to him and tried to tackle him, missing miserably and falling to the floor.

Dipper: Guys, stop! It's been fun and all but I've gotta g-!

His words where interrupted. He fell to the floor unconscious. The girls looked very confused until they looked up to the door that was suddenly opened without warning. They peered past it to see Stan at the door.

Stanley: Ha! Hey guys! You won't believe what I coughed up! Mabel! Remember when you couldn't find your phone?!

Stan paused when he noticed the situation. He looked down to see Dipper out cold and the girls looking at Stan like he was a criminal. That's why Stan was so used to the look.

Stanley: I'll just..... be going.

Stan raced down stairs and got on the home line.

Stanley: Rico, it's me. I need your help disposing of a body.....Who's?......

Stan paused and looked behind him before going back to talking.

Stanley: Me......

Just as he said that, Stanford walked into the room.

Stanford: Stanley. Who are you talking to?

Stanley: Ha! What's it to you?

Stanford looked at Stanley with a strange face and slowly backed out of the room.

Just when Stanley hung up the phone, the girls ran down the stairs.

Mabel: Grunkle Stan! Dipper's not waking up! I think you knocked him out a little too hard.

Stanley: Kids. Don't tell my brother about this or he'll freak out. Dipper's like some kind of lab partner to him. If he finds out that I knocked him out, I'll be his next experiment. For all matter, don't even tell Dipper what happened.

2 hours later

Dipper groaned as he sat up. He looked around and was quickly startled by the crowd of faces surrounding him.

Pacifica: Hey, bud. How are you?

Dipper: Uh.... Fine?

Dipper scratched his head but quickly shot it back as searing pain arose.

Dipper: Ow! What happened? I remember you guys tickling me or something and then I got knocked out.

Stanley: Uh..... I haven't gotten any new milk lately.

Pacifica: Yah. You must have had some of that bad milk. It probably gave you a crazy dream or something.

Dipper paused for a moment before speaking.

Dipper: Oooohhhhh.......... Do you think I'm an idiot?

Mabel: What?

Dipper: There's a giant bump on my head and you want me to think it's from some bad milk?