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 02, 2005
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by anal anilllater March 29, 2011
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by upperdeck... October 11, 2008
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The act of taking a shit on wax paper, wrapping it up and putting it in the freezer until solid frozen. Then using the frozen turd as a time delay shit bomb, drop it in the upper tank of a toilette. The Shit Agent will have time to escape and the results won’t happen until hours after he is long gone. Once the shit thaws and someone flushes the toilette, it will fill the bowl with brown water and mission is complete.
I was over Jill’s house and she had a couple people over . I wanted to upperdecker her toilette but didn’t want to get caught. Since I have mad spy skills I used some frozen shit I stashed in her deep freezer and upperdecker 007’d her toilette , giving me plenty of time between the time I left and when Allyson went in and flushed it.
by Stephen Roche October 22, 2017
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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
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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 14, 2008
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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 March 29, 2016
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