When you go into a resturants or public places bathroom and have to shit and so you go in the toilet tank and when people go in their they'll be wondering about the small and never be able to find it.
Herget and Zach went into Zaxby's, Herget powerbombed the bathroom while Zach upper tanked it. Man what a mess.
by Ewan February 1, 2004
Get the upper tank mug.Someone who shits in the upper tank of a toliet then leaves. Then some unsuspecting fucker comes and takes a piss or shit and then flushes it,, only to find brown water coming down.
Since that bitch wouldnt put out, i said i had to leave her house for business. I then ask to use the toliet, there i Upper Decked her toliet and then left. Bin Laden has nothing on this Upper Tank terrorist
by jwka July 30, 2009
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Taking a shit in the upper tank of a toilet. Also known as "2000 Flushes Brown" and "The Gift That Keeps On Giving"
The people at that fondue party were such fuckin' pricks that I had no choice but to give 'em the old upper tanker.
by montez May 8, 2003
Get the upper tanker mug.Idiot: I gave that ho an upper tanker!
Some Guy Who Knows His Shit: You mean an upper decker?
Idiot: Yeah, whatever.
Some Guy Who Knows His Shit: You mean an upper decker?
Idiot: Yeah, whatever.
by MePoop May 15, 2006
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