When the crack of your ass is filled with shit.
Hey wipe well before coming out, I don't want to see an asstaco.
by Chanmeng January 27, 2008
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It's when the various ingredients pertaining to a taco are placed into an ass as if the ass is the taco shell.
I would love to eat your asstaco, but I like a little more cheese and maybe guacamole.
by TrotskytheDog February 03, 2010
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