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When someone, particularly a guy, has abs that aren't really abs. When flexed, they tend to be sort of triangular and make a sort of christmas tree. They don't really stick out from the stomach much, and are generally found on really really skinny guys.
His abs are pretty good. Not really, those are just baby abs.

Ha, look at that guy. He has baby abs.
by Maxwell 12345 December 16, 2012
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