Nipple Grass 

The hair of either a man or woman's nipple area, usually on the rim

"Dude that guy was so hairy!"

"Ya man did you see his nipple grass!"

Nipple Grass by zackie brew January 7, 2009

nipples cutting glass 

when its so cold, and your nipples are so hard, they can actually cut thru glass, much like a diamond...

Girl : Oh my god its cold out today
Guy : How cold is it?
Girl : Its nipples cutting glass cold

nipples cutting glass by TreyTrey December 9, 2008

glass nipples 

The result of cold canadian winters creating nipples so hard they could cut glass.

"Hey bro, you might want to wear a coat, the winds are causing some mad glass nipples."

glass nipples by CamelToeKa October 28, 2013