When a female will not do anything against her significant other's wishes for fear that he will retaliate by not giving her the cock...

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.

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.

Cockslapping is the practice is slapping someone's face with your penis, usually when erect. Often performed as a joke, when the recipient is either asleep, stoned, or otherwise incapacitated.

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

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.

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