A disease in you get in your nipples for wearing a wet bathing suit for too long. Symptoms are puss and scars on your nipples
Nicky: "You should change out of your bathing suit or you'll get Nip-in, its an awful disease"
Lisa:"That doesn't exist!"
Nicky: "Yes it does I had it last summer."
by Fairview December 23, 2011

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