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!"
by hrtagm May 5, 2011
Get the Nipslipmug. by aimeesexylips September 20, 2020
Get the Nipslipmug. short for "nippleslip". When a female nipple or at least the areola is showing, its called a nipslip.
by Kaipo December 7, 2006
Get the nipslipmug.