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1.
v. (nah-pee) - nappied (past)

The sadomasochistic sexual act of bringing a partner close to orgasm, and then physically assaulting their face just prior to climax with the intentions of preventing the climax. The assault is aimed to leave the partner with a black eye, which they must bare in shame until fully healed, also known as a nappi-mark.

The term can also be applied to any general setting in which a blue-ball effect occurs that leaves the recipient with a physical mark of abuse.
I went to bed with a girl last night, but got nappied before I got off. Hence why I can barely see out of my eye today.
by domaniac321 April 26, 2011