a maleact of ejaculating in ones hand, followed by slapping the semen onto the top of the cranium, onto oneself or another.
After her boyfriend withdrew from her vagina in the doggy-style position, the woman's hair was soaking wet after being slapped with a nightcap from behind.
After masturbating into his hand, his hair glistened from a self inflicted nightcap.
An act of a sexual nature usually performed after a steller date, involving the male punching the female in the face and proceding to deficate in her face just as she regains consciousness.