Uncommon masturbation technique in which the masturbator either a) uses both hands in a crab-like manner (thumb is one aspect of pincer, remaining fingers are the other pincer) to induce pleasure by sliding up and down the shaft or b) uses one hand on the dickhead; prevalent in the Mormon community, where young men are left to their own devices on how to jerk it.
"Give me 10 minutes guys."
"Why bra? What's the deal?"
"My dong is beggin' for the crabhands." (Door Locks)