An upperdecker is when you poop in the toilet tank of someones bathroom, its the gift that keeps on giving
by Nick June 18, 2006
Get the upperdecker mug.The upperdecker is a prank that you can pull on a friend or loved one, or more likely someone who deserves it. An upperdecker is defined as defecating in the upper tank of a toilet, allowing it to fester for as long as possible and sending a chilling brown residue into the bowl upon each flush.
At a party where they run out of beer one might like to leave an "upperdecker" to show their disapproval.
by Grant Herman August 31, 2004
Get the UPPERDECKER mug.A vengeful act of defacating in the tank of a toilet so as to odorize the bathroom with every flush for weeks until found. This is usually done at parties where you don't like the host/hostess.
"everytime I flush the toilet my bathroom wreaks, someone must have left an upperdecker, when I said the parties over go home..OH man! they did."
by troy garner September 21, 2005
Get the upperdecker mug.A man takes the upper-back of the toilet off and sits on it. A woman gives him a blowjob as he takes a crap in the back of the toilet. After crapping and the blow job is done, he puts the lid back on the toilet.
An unsuspecting person comes in later and uses the toilette. When they flush the toilet it fills with brown water from the crap the man took in the upper deck.
An unsuspecting person comes in later and uses the toilette. When they flush the toilet it fills with brown water from the crap the man took in the upper deck.
“I was over Al’s house and I upperdecker double blumpkin’d his toilet. That thing was flowing brown all day”
by Stephen Roche September 21, 2019
Get the Upperdecker Double Blumpkin mug.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.
by curlypoo December 24, 2020
Get the upperdecker mug.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
Get the reverse upperdecker blumpkin mug.One person sits on the toilet while the other person stands above him. The person sitting is giving a blowjob to the standing person while both are taking a shit.
I walked in the public restroom and caught my roommate and some stranger doing the upperdecker double blumpkin deluxe.
by JScrub619 July 4, 2016
Get the Upperdecker double blumpkin deluxe mug.