Big Tits; huge knockers, cans, sweater puppets, yabos, twins, etc.
Said loudly by one male to another male, especially in a crowded place (i.e. bar, restaurant, work, mall, etc.), "dude, gib stit 3 o'clock!" rather than saying, "dude, big tits 3 o'clock!" which might warrant a kick in the pills from the one with the gib stit.