E.N.

Nickname for the fraternity Sigma Pi. Other common nicknames: Sigma Fried, 32 Gang
by Papayao08 October 22, 2020
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e.n.

Stands for "erect nipples". This is when it is cold outside and a female's nipples become hard and often show through their piece of clothing.
Oh shit! That is a serious case of e.n.
by Wilburg March 23, 2004
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