Upperdecking

Using the restroom, going number one or two in the water tank of a fellow man's toilet. when he flushes the pee or shit flows out.

The other night we were upperdecking, it was funny as shit.

by douchebagness May 16, 2007

upper deck

depositing your fecal matter in the tank of an adversary or foe.

That guy Jimmy threw a party last week. He tried to kick me out, so I upper decked his ass. Then I wiped some shit in his bedspread. I hate that jerk, but he straight got shitowned!

by Jake Fischer March 3, 2005

Upper Deck Salad Shooter

The act of taking an Alli or other diet pill, going out and eating a meal with a high fat content (which anyone who has taken an Alli knows this gives you the instant runs) and then emptying your runny bowels in the toilet tank instead of the bowl. Usually an act of revenge.

That fag Keith has stood me up for breakfast two weeks in a row. I'm going to pick up some Alli and Upper Deck Salad Shooter his downstairs bathroom.

by Sue_Ellen December 9, 2008

UPPER DECK

takin the top off a toilet tank and shitting in it and placing the top back on the tank and walking away

i went to my friends house and used his bathroom and gave him an upper deck

by DAVE AND CLARK May 8, 2008

upperdecker

When you shit in someone’s toilet tank. To pull one at a lame party, first eat everything there that doesn’t agree with you. Then go into the bathroom, remove the lid from the toilet, squat over the tank, and release the explosive diarrhea that has surely built up by now. When you are finished, the water in the tank should be brown, and have dozens of lumps of shit in it. Then wipe your ass, putting the used toilet paper in the tank, replace the lid, and leave the party, or stick around to watch the fireworks.

This party is dumb, i’m gonna drop a mad upperdecker on this place.

by curlypoo December 24, 2020

upperfuck

to uppercut a woman in her crotch. It hurts. I would know.

Daniel Tosh reffered to it in tosh.o once..

Megan: "omfg did you see Ashlee take that upperfuck from Lauren?! xD"

Chris: "yes! haha that was hellaaa hott"

by Gunlovesbullet March 16, 2011

reverse upperdecker blumpkin

Recieving a blumpkin while taking an upperdecker with the person performing the blumpkin turned around backwards on the toilet sucking you off and simulaneously taking a shit.

That was some fucked up shit last night, I can't believe your mom gave me a reverse upperdecker blumpkin.

by don von donnie March 17, 2008