Where a girls nipple peeks out and reveals itself accidentally
Jenny your nipples showing cover that up!

Oops nip-slip!
by NJ16 March 9, 2014
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When you are doing watever and you nipple decides to slip out of you're shirt and show the world
Did you see that Sarah just had a nip slip 😂
by Kitty's it's October 3, 2015
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Aimees tops at work always nip slip she has if nipples and wears low tops
by aimeesexylips September 20, 2020
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The act of having your nipples exposed due to loose fitting clothes. Often embarrassing if Female
Brittany can never watch videos of her own engagement party because she had a total Nip Slip in front of her friends and family and nobody said a word
by Goatsecx luver July 6, 2023
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The unpleasant moment that occurs when a mans "scrumptious hard nipples" appear through his tight shirt. This moment can be made much worse when the man bears "man-titties". This appearance will normally cause cringe, disgust, or hilarity to others.
Patrick: Bro, did you see that? That sight will never leave my mind.
Juan: Damn what'd I miss?
Patrick: I just witnessed an unfortunate nip-slip
by Cheese34 September 16, 2016
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When you mean to flash someone a nipple but you accidentally flash your bait & tackle
He gave us the old Freudian nip slip and we all got a big peak at his one-eyed willy
by ManleyGreaseMissile May 12, 2021
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when a woman has a nip slip and all the men/woman in the room realize that woman has unnaturally big nipples (as big as a light bulb).
she was dancing and had a nip slip i yelled what a tiny nip slip they look like light bulbs!
by bummyland November 13, 2011
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