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1.
A new sex act that is all the rave.

It is when you bite off a girl's nipple (American Psycho style), digest it, and then shit it back on them where the original used to be.
"Omg have you ever been nipshitzed on?"

"I love it when you nipshitz"

"Oh, baby, nipshitz on me again!!"
by Loeliman April 10, 2012