Jap

To masturbate, originated from the slang for Japanese, since they are always masturbating.

Example:
What's Matsuoka doing?
Oh as usual, he's just japping.

Yo, isn't that babe jappable?
(In this case, it means she is hot enough for you to jap while staring at her picture.)

by pierre dyslmbt February 12, 2009