Tuna Bobber
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."
Friend: "Of course I got you, I'll let you know when you got one on the line."