crab shanty Share definition Flag A dirty, dusty, used up, old cooter. May possibly have crabs (the STD) and just smells of fish. Mark: Man did you ever get Felicity's pants off? Tom: Yea, she has a nasty ass crab shanty. crab shanty by Jamul April 4, 2008 0 0 Get merch Get the crab shanty mug. Buy Now — $32.95 See more merch