Top definition
When a girl who has clearly gained relationship weight has decent amounts of sex, resulting in belly bulge.
Guy 1: Hey did you see Hayley?
Guy 2: Yeah, she got a major case of fuck belly.
Guy 1: Yeah, that cow's being pounded.
by shnookie shnoor November 26, 2011
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2
Some fuck belly caught John.
by Deep blue 2012 September 23, 2009
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