Upperdecking

Removing the lid of the back of someone's toilet and shitting in the clean water. Results in shit running into the boil with every flush

That bitch pissed me off, so I upperdecked her shitter

by Dan April 5, 2004

UPPERDECKER

The upperdecker is a prank that you can pull on a friend or loved one, or more likely someone who deserves it. An upperdecker is defined as defecating in the upper tank of a toilet, allowing it to fester for as long as possible and sending a chilling brown residue into the bowl upon each flush.

At a party where they run out of beer one might like to leave an "upperdecker" to show their disapproval.

by Grant Herman August 31, 2004

underfuckingstand

underfuckingstand - Understand, with "Fucking" inserted in the middle, making it an exclamation of frustration or, in some cases, a joking statement.

"What part of this do you not underfuckingstand?!?" or "I dont underfuckingstand!"

by Steve October 24, 2004

Upperdecking

This one takes practice. This maneuver requires a toilet with a tank above it, like the ones in most homes. Instead of crapping in the bowl, you shit in the tank. Now don't flush. When the following victim flushes, the rancid waste fills the bowl. If you play your cards right, it may ferment. Great prank for those lame partys.

"I gave that toilet a nice upperdecking, Just wait till she comes outta there"

by CharlesVA August 5, 2006

underfucker

the person who criticizes a lot

(at a lesson a person criticizes all the time)
me: He's such an underfucker!

by beduina November 6, 2013

Upperchuck

BAD ASS MOTHER EFFIN' UPPERCUT

R: you're a confused child, M.
M: o no you didn't..*UPPERCHUCKS* the shit outta R.

everyone watching: DANGGGGGGGGGGGGGGG, YOU GO GIRRRRRL. SHOW 'EM HOW IT'S DONE!!

by fh2012 October 25, 2012

upperdecker

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 21, 2005