The act of upper-decking a toilet while a girl gives you a blumpkin sitting fonz (reverse) style while also taking a shit in the bowl of the toilet.
You win if the guy ejaculates while both partners shit simultaneously.
The top score is a win combined with someone else walking in on you and simultaneously vomiting.
My girlfriend caught me upper decking my friends toilet and we decided to upgrade to the penthouse suite.
by lookatmytophat October 29, 2010
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