Top Definition
An acronym for No Boobs; Couldn't Masturbate.

Used in response to seeing a picture which has no appeal based on it's lack of visible breasts.
Person 1: "Dude check out this picture of my new girlfriend"
Person 2: "nb;cm"
#masturbate #tl;dr #boobs #breasts #pictures
by Monimus November 22, 2010
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