Situation's Hook-Up -- He's Cockier Than You Think

100510_the_situation_girlfriend_video_stillOne of The Situation's non-grenades -- Samantha the moaner from last week's "Jersey Shore" -- came to L.A. to see her man on "Dancing With the Stars" and to deliver a message to the haters.

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Samantha told us girls who claim Sitch is "small" are big fat liars, because he is... well, big and fat.

Beauty -- and other stuff -- is in the eye of the beholder.  Ewww.