When a man is taking a shit in the toilet tank while a female is sitting on the bowl reverse cowgirl taking a shit and sucking his dick then once they are finished they preform a reverse 69 licking each others assholes clean.
by tootalljen89 November 22, 2011
Get the kentucky upper decker double blumpkin mug.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.
by douchebagness May 16, 2007
Get the Upperdecking mug.the act of deficating in the water tank of someones restroom, so when they flush, out comes muddy madness
by darby krow February 13, 2010
Get the upper decker mug.by @catfur June 28, 2012
Get the British Upper Decker mug.by Goldgoatturd February 20, 2009
Get the Upper Decker mug.When one is frustrated and angered to the point of giving the accused a most-deserved upper decker and feels the need to voice their anger- they must, just before dropping a lung in the toilet tank, shout loudly- "This is Sparta!!!" as spoken in the movie 300. After this is spoken, one would shit with vengeance into the tank.
Angry person- That bitch of a waitress ignored our table for over half-an-hour because they add automatic gratuity to the check, so I will leave them my opinion of their service in their toilet tank in the form of a Spartan Upper Decker.
Friend 5 minutes later- Did you do it?
Angry person- I showed no mercy!
Friend 5 minutes later- Did you do it?
Angry person- I showed no mercy!
by Litaker April 25, 2011
Get the Spartan Upper Decker mug.Valerie was so drunk she did an upper decker in her friends toilet at the party, and everyone smelt it.
by valere March 13, 2008
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