A method of masturbation in which a man repeatedly pinches the tip of his penis with his thumb and forefinger. Can be done with one or both hands. Also known as crabbing, the crab grab, the fiddlers whistle, and Daniels Song
"Auughh... Ooughh... I'm crabsturbating, crabsturbaaaaaaaation"
de The Dumper 12 Februarie 2009