mississippi crab dangler means: This is a four-person sexual act that involves a tractor and two other people. First, three people, usually males, get onto the tractor. The fourth, the “crabdangler”, is tied to the tractor’s back. The tractor pulls the tractor through a mississippi cotton fields. Three people are pissing and shitting on the tractor, while the other two are trying to ejaculate off onto the “crab dagler”. It was affectionately called the “mississippi crab dangler”, as the fourth person always has a crab hanging from his or her ballsack. Most commonly, it is used with a King crab or a John Deere 2001 industrial lawn tractor. (in Community Dictionary, added by Facundo Moreno)