Top definition
Comes from the spanish word, "Nalga" which is slang for butt. When you're making out with a fine ass lady and you take off her pants and her ass is full of pimples, or celulite, looks like cottage cheese, or any other kind of unpleasant surprise.
I was about to stick it to this hoe Cindy, when she liffted up her skirt and BANG!!!! Nasty Nalga Surprise.

Dude that sucks..so did you bang her?

Yea.

by NastyMammoth June 06, 2007
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