upper decker

The act of removing the upper lid to a home toilet. leaving an imense amount of defacation inside. the next customer will go and then flush your shit into the bowl, repeatedly.

while in ohio, the clarion hotel wouldnt give us a room because we werent 21, so ryan anson gave them an upper decker

by friend July 30, 2003

Eco Decker

When you take a dump in the back seat of your ex's Prius

My ex left me because I wouldn't compost our trash... so I left her an ECO DECKER. That Prius was my composter.

by Eco Dexter December 29, 2009

Upper Decker

When you take a crap in the tank of someones toilet instead of the bowl. Most often done to a sworn enemy or to your best friend.

I pinched one off in the upper deck. He'll have fun cleaning that out!

by Helvis September 16, 2003

upper - decker

When one takes a shit in the upper portion of the toilet. ( the tank ).

mike was really pissed that the land lord was evicting him. So he left him an upper - decker.

Jim wanted to get back at his best friend Steve for sleeping with his girlfriend, so he left him an upper - decker.

by TNT- DOUG September 27, 2006

Under Decker

When your at a party and everyone is wasted and you shit infront of the toilet so they step in it.

I was soo wasted last night i didnt even notice i walked right into an under decker.

by Steve Trizzle April 1, 2008

double-decker threesome

The most supreme of all sexual positions, includes two (2) midgets and a normal sized person. While the normal size person is making out with the midget, who happens to be sitting on the other midget's shoulders. The bottom midget simultaneously performs oral sex (blowjob) on the normal sized person, thus creating the double-decker threesome.

The double-decker threesome in the episode of Little People Big World last night, gave me a raging boner.

by P.B.Ribbon December 2, 2010

Blumper-Decker-Dactyl

The act of receiving a blumpkin while taking an upper decker as the female is also giving two guys on the sides handjobs (the head and hand movements mimic a pterodactyl flying.)

Dude, I felt like I was in the prehistoric era because of how believable her pterodactyl was when she was giving us a blumper-decker-dactyl!

by CPSC October 4, 2010