when you're wearing a shirt with out a bra and your nip slips out and you can see it and the public is like "WTF, YOUR NIP IS OUT!"
dude your nip is out, wtf its a nipslip.
by hrtagm April 15, 2011
When a braless female's nipple accidentaly slips out from under a loose-fitting garment
Hold up, pause it there. Yup, total nip slip!
by Anonymous November 02, 2002
When a nipple slips in to view.
She walked out on stage with her tit falling out, it was a hell of a nip slip!
by aaron4273 April 15, 2005
When a nipple (more often than not, the nipple of a woman) slips out of an article of clothing, partially or fully, and is noticed by someone else.
She destroyed the nip slip photograph almost immediately
by anne on a mauz June 04, 2006
When a female celebrity "accidently" lets her nipple show or has her whole boob slip out. Check pictures of Lindsey Lohan.
Wow,nice nip slip!
by Eiken June 01, 2004
short for "nippleslip". When a female nipple or at least the areola is showing, its called a nipslip.
Paris Hiltons nipple showed again, she had a nipslip.
by Kaipo December 05, 2006
To have the nipple showing on accident. Most common in public or on live t.v.
Don had such a nip slip the other day, he got embarrassed because he was on live t.v.
by #NipSlip March 25, 2014