To trade something (typically a meaty engorged gator bait stick for a swampy gator snatch) for something else whether it be another object, money or something else. Also see gator swap meet.
Often a less than hygienic person that lives in Florida with low morals and of poor character, whom will do any sexual act ,steal, lie, etc. for gator snatch, with a preference of swampy smelly gator poutang.
Dean be salty he missed dat sweaty swamp swap last night, there was some mad ass gator poon tang going around.