(Noun) Diarrhea in the most urgent sense. Liquid poop with corn chunks and beans. Pretty much anyway you use ass-piss, as long as it is applied in the same fashion as shit.
Can be utilized as a proper noun, adjective and verb where applicable.
The ass piss I just dropped was epic, it was like liquefied brownie chunks and ground up burrito mix topped with hot fudge.
by WHC'sOwnReal May 5, 2011
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A sexual fetish as follows:
The dominant male, after drinking some liquid prior, takes a pair of forceps (as used to help deliver babies) and uses them to forcibly hold open the submissive woman or man's anus to a width suitable for urinating into. He them urinates into the dilated asshole, filling it with urine. the forceps are then removed, and the anus allowed to close fully. The recipient of the asspiss is then allowed the great pleasure of passing the urine out his or her anus, as if defecating, only liquid. This process is quickly growing in popularity, and looks set to move mainstream within the next few years.
hey bitch! I'm gonna give you an asspiss whether you like it or not!
by HOB October 12, 2004
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A condition from drinking beer mostly budweiser where the ass secrets some funky liquids and it mixes with sweat.
Tony: You guys drink Budweiser?
Sarandee: No, it gives me ass piss.
by Andee K. November 8, 2007
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Diarrhea, about as runny as it gets.
"I don't know what i was thinking last night, i had ass-piss all morning."
by bosky dell September 3, 2008
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Where some guys are waiting there turn at the urinal and a guy behind another because he gets pissed off and/or just for fun pisses on the ass of the guy in front of him. There he will probably have to run.
by The Fury 13 November 22, 2010
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An epic maneuver in which a man lets his pants and underwear drop to his ankles, lifts his shirt up to armpit level, and urinates, much in the manner of a 4 year old trying to use a urinal. Usually executed while intoxicated. Occasionally performed in tandem by a group, no homo.

Since many guys did this at urinals when they were kindergarten age, the act of doing this is often referred to as "bringing it back".
"Guys, I have to pee. I'm gonna bring back the bare ass piss."

"Joel, I heard you brought back the bare ass piss the other night."
"Feels good, man."
by Mackie J October 16, 2009
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Diarrhea that is so water-like, it feels as if you are pissing out your asshole.
Damn, I had those 12 Chalupas, now I have a bad case of butt pee or ass piss.
by Big-Z™ October 17, 2005
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