1 definition by bigboy234175

when one "busts a nut" in a girls butt. May be associated with a creampie, but used exclusively when talking about the ass.
GUY1: yo dude, so how was it last night?
GUY2: it was alright man, I'm kinda embarrassed though
GUY1: why's that?
GUY2: I don't know, I accidently came inside her ass
GUY1: oh that's nothin bro... I gave my girlfriend a nutter butter last night as well
by bigboy234175 April 25, 2009
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