Keister Stash

In prison, the act of concealing objects in your anus or in the crack of your ass.

-Yo, Bill. How did you get those cigarettes in here, man?-

-I keister stashed 'em, dude.-

by bodythunder November 12, 2008

Upper Decker

A toilet prank, whereby someone defecates in the refill tank (water closet), causing each additional flush to deliver brown, poopy water into the bowl.

Jim was being such a jerk at his party, so I went upstairs to his bathroom and dropped an upper decker in his toilet.

by bodythunder November 12, 2008