The most humiliating act a man could ever give. Should you be the unlucky victim of a cockslap, especially when you're sleeping, the best advice is to kill yourself.

to slap someone with one's cock; to cockslap someone is to assert one's dominance/superiority. Also, girls like it when you do this to them.

to whip out your crank and slap a bitch across the dick-sucker with it.

Verb. To induce or cause a smack to the face with a penis of abnormal size

While receiving fellatio, the recipient withdraws his penis from the giver's mouth and slaps the giver across the face with it.

It may be an act of degradation, punishment, or performed during climax for an added dramatic effect.

to slap someone in the face with your half-erected dick. doing this before or after having sex it is the only secure way to avoid pregnancy and venereal diseases.

When you write penis in big letters on your hand with wet ink, then slap someone round the face so the word _PENIS_ in prints on their face. :)
It's another term for bitchslap basically. (: