When someone goes down on a girl who has crabs.
Example 1: "I got that guy to go crabbing last night."
Three guys engaging in gay sex, they do a train, first guy puts up crab hands. Queue Crab Rave.
Bread and Elliot wanna go crabbing at Belcarra. I hope they bring a speaker and enough lube
Flooding. An adjective used to describe someone whose pants are too short (exposed ankle) and are too poor to afford clothes that fit. (Commonly used in the 70s-80s.)
The poor farm girl's pants were crabbing!
Taking a haircomb and running it through your pubes to get the crabs out
"damn bitch you need to go crabbing"
Very common religious Indian traditional sport which is practiced especially near the shores of the Gange river. It consists in inserting crustaceans inside the rectum and making them walk along the walls of the large intestine using special techniques.
"Hey Pajeet, let do some crabbing!"
"No, Rajesh, my butt still hurt from last time."
"Cow God take my crabbing dance offering and spare my children from disease plis."
"Show bobs vegana I show me crabbing"
Having a "Crab Crack" is when your ill fitting underwear rides up your arse crack, and you have to pinch them back into position using a crab pincher form with your hand.
"Hold on a second! I've got to stop walking, I have a bad case of Crab Crack!"