upper decker

When you have a massive deuce that must come out when your at a big party. You remove the top lid to the toilet, and release all the poo into it. When done, put the lid back on, and walk out like nothing happened.

I just put an upper decker in her toilet, HAHA!

There gonna be lookin for that upper decker for weeks,HAHA!

by boiiiiiiiiiiiiiiiiiiiiiiiiiiiie April 8, 2006

upper decker

A modification on the "classic" upper decker. In a public toilet setting (where there are no tanks/commodes), you improvise and shit in the urinal.

When Hank got fired from his job, he pulled an upper decker in the company bathroom.

by David C July 20, 2008

upper decker

Besides the common definition... A behemoth, often coiling, mass of stool that grows and grows until finally reaching above the water level of a toilet bowl. Known to be associated with binge eating. Kind of like one of those underwater volcanoes that breaks the ocean surface.

I had the munchies so bad all weekend, btw do you have a plunger I took an upper decker in your shitter and it's backed up.

by evangelicalathiest April 22, 2011

upper decker

Unleashing the biggest load of crap in the top portion of the toilet.

"I wasn't able to get a beer at this party, so I took it upon myself to give him an upper decker in the toilet".

by mark abestin December 18, 2003

upper decker

AN ACT OF WAR. To take shit shit (some crazy how) in the upper tank of a conventional toilet. The next flush will be your shit and shit colored water. WARNING: The tank will be saturated with your shit. Hence the WAR about to commence. Do not do this without an immediate exit plan. And a fucking follow up plan of how and why you did such a fucking nasty thing.

I took and Upper Decker and dipped. Because I hate that fuck. And I am also a nasty unhygienic piece of shit whom wanted to fowl their party and embarrass.... fucking however.

by theutopianing September 19, 2012

upper decker

To put toilet paper over someone elses poo when the toilet is clogged and then take a shit on top of the original poo.

I shit on eric's poo because he clogged the toilet and there was nowhere else to go.

by grind January 16, 2004

upper decker

to leave a nice steaming terd on the toilet seat, enhancing the savory odor for the next user of the john; especially irritating to females, dudes not so much. Not to be confused with a Back Door Bandit which involves removing the lid of the reservoir tank and much better balance

eww, gross!!! some fuckwad left a upper decker in there!!!!! take me somewhere to tinkle, dammit!!

by coldbowl June 3, 2007