slapnap

When one of your roommates gets up and says they are going to take a "nap" when, in fact, they are actually going to go masturbate.

Nikesh: "Sorry guys, this looks like fun, but I gotta go take a nap."
Will: "Lay off the Jergens, Patel."
Chorus: "SLAPNAP, SLAPNAP, SLAPNAP."