Cock Locks are dreadlocks, however the key difference is that instead of using hair from the head, they are made using public hair on males. The combination of the public region ("cock") and the dreadlocks yields the final term, cock locks.
When a man is about to pull out of a woman's vagina because he doesn't want to get her pregnant and the woman then wraps her legs around the mans waist and forces the man's penis inside of her repeatedly until he cums; usually causing pregnancy.
Guy#1: Dude I heard you and Cassandra in the bedroom last night sounded like you guys had a good time.