The act of "pooping" in a bandanna and slapping someone in the face with it.
"Dude you should have been there i gave a dirty poncho last night!"
by Roidz December 7, 2006
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the act of shitting (preferably diarrhea) on ones head; therfore leaving the person with a "dirty poncho"
guy: "I just gave my girlfriend a dirty poncho."

friend: SWEET!
by sirsmokebudzalot August 30, 2011
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greasy, slippery, fun loving, 30+ yrs of age who dresses like a metrosexual tween. (often seen in holister garb). Of questionable Mexican heritage. Although fond of tequila, crack and puck bunnies...has discerning taste when it comes to beer burglers
q: "See that dirty old dude checkin out the sales girl at Holister?
A: Yeah...What a dirty mexican (aka poncho)
A: Agreed...such a Poncho
by mouse podi fpk October 23, 2008
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