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 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.

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 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!