nip on 

The process of nipple hardening due to extreme cold

Fucking hell John, she's got a nip on

nip on by Smirnoff Monkey September 16, 2004

nip-on 

to have an erected nipple.

haha look at the bird. its so cold or shes so horny shes got a nip-on!!

nip-on by josh chamberlain August 14, 2007

nip-on-jin 

Japanese female or gay male nippopotamus, usually helluvalot of plastic tsunami or fujiyama-mori bras.

GI-Jones: "Gosh, look at that nip-on-jin! Ain't gigantonic?"
GI-Jodan: "That nippopotamus? Sure they are plastics or gaysha-dude."

nip-on-jin by GoldAndButman August 23, 2011

nip-ons 

Nipples made erect by cold temperatures. Name derived from the male hard-on.

Look at that chick singing the national anthem for the hockey game...She's sporting a set of nip-ons.

nip-ons by JumpinJosephat March 25, 2007

Nip one off 

Refering to the action of the anal spincter at the conclusion of a succesfull bowel movement.
This term is seldom used after excessive consumption of lager and vindaloo curry.

Where's the arse fodder? I am going to nip one off.

Nip one off by Blue Cawdrey November 19, 2004

one nip dip 

V. Exposing one's nipple silently and immediately leaving an event, occasion, or situation.

N. The silent exposure of a singular nipple before immediately leaving an event, occasion, or situation.

V. I one nip dipped my boss today after telling them that I quit.

N. When my OKC date was going sour, I gave them the old "one nip dip".

one nip dip by honeywitch June 6, 2017

One Nip Slip 

When only one of a woman's boobs falls out of her shirt.

Did you see how low her shirt was yesterday? She almost had a one nip slip!

One Nip Slip by bzz9695 March 23, 2010