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One who indicates a friend that he has a chick on the line. A friend who lets another friend know they are about to get fucked, these situations usually occur at a party, another term for wingman.
ME: "Hey, im drunk, be my Tuna Bobber for me tonight."

Friend: "Of course I got you, I'll let you know when you got one on the line."
by titos334 November 14, 2010
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