Nipple Up 

When a woman ices (or at minimum, perks) her nipples before going out. She does this to look super duper hot.

That girl's looking smoking. See her nips? She probably did nipple up. Yeah, she probably nippled up.

Nipple Up by jgarner3999 February 8, 2010

nipple up 

get tough, step up to the plate, it is the female equivalent of nut up or sack up

She needs to nipple up and tell that guy what time it is.

nipple up by drbillyg May 19, 2014

Nipple piercing plug up 

When you have a gaping nipple hole and plug it up with a randomized person cum and spit while waiting 48 minuets to dry then licking it back up to reintroduce you feminists side this act is extremely illegal except when don’t in native America costumes

I got a nipple piercing plug up

Nipple piercing plug up by Noah dat boi June 16, 2018

nippled up

Australian Slang.
Erection of the female nipples.

That sheilas all nippled up.

nippled up by gladi August 5, 2008

going nipples-up

going bra-less, particularly in cases of individuals with perky or hard nipples.

did you see the top she wore last night? I'm sure she was going nipples-up!

going nipples-up by zazamua November 11, 2013