look up any word, like cunt:
 
1.
To stroke your own penis repeatedly until you skeet, unless your mother comes in, then you become a serial killa.
Kid 1: He's been in the bathroom forever! What could he be doing?

Kid 2: Probably crackin' off!

Kid 1: Dude, that's not even an expression.
7 3

Words related to Crackin' Off

babies crack cracking jack off off penis tacos urban dictionary