to wreck or destroy the insides of the female genitalia through repetitive pounding with one's average to large sized penis. those with a small penis cannot smash guts, ie randall.
yo greg, did you see the ass on megan? that shit is on fire.
whatever man, i will smash guts on that bitch all nite son.
by iwishihadaflamethrower June 15, 2010
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