Top Definition
adj.

A woman's naturally uplifted breast. Appear to be nice, round, and firm. They do not hang and have a perfect bounce.

Nothing less than a 'B' cup and no more than a 'D' cup.
Guy 1: Did you see Doris' tits?

Guy 2: Are you kidding me? They're perfect!

Guy 3: Safe to say, those are some "Gripnacks!"
by Christian E. July 22, 2008
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