1. A part of one's entourage, generally a male, known for their excessive use of "swoop," a tactic where one attempts to pick-up a female who is already clearly being macked on by one of their friends.
Male 1: "WTF?! That guy in the Spartan costume totally came in and started mackin' on the girl I was talking to!"
Male 2: "He's a total 'Swoop Dawg.' Actually, that's what we call him. You didn't know?"
Male 2: "He's a total 'Swoop Dawg.' Actually, that's what we call him. You didn't know?"
by Between Hangovers October 31, 2007
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