An early-warning system deployed by women to indicate A) they are feeling cold or B) they are feeling horny. The skill lies in the interpretation.
If you see a woman with erect nipples try asking: "Are those two frozen peas in your bra or would you like me to fuck you?"
by Seaman April 17, 2006
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Where your fucking cold or you have the gay-ass goose bumps, your nipples get fucking hard and pointy. Sometimes called pointy toys.
Man 1 "Dude did you see that slut with the pointy toys?" Man 2 "yeah you could see them through her white wet shirt!"
by Nipplewomen June 7, 2005
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Women have them when they're feeling cold or horny.

If they are sexually aroused, their nipples could even get harder when squeezed, pulled out or sucked on.
- I can tell ya that young lady is ready to get fucked!
- How come??
- Those erect nipples! It's hot so she must be very horny.
by BCE1 August 6, 2021
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(ENS) A phrase used to describe a woman in any situation who has pert, visible nipples coming from under a garment of clothing
by David Dunlop March 3, 2004
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The look of having your nipples stand out, "erect"

Usually someone with ENA does not have a bra on
Lucy:Janet, that girl has a major case of E.N.A (erect nipple alert)
Janet:OMG, Luc, she totally does! That ho must have forgotten her bra!
Lucy: What else do you expect from the school slut?
by Giuseppee! Or Gipsie August 18, 2009
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a word thats really cool and its when u can totally see your nipples through your shirt. its pretty nasty!
lena: omg! i cant even look at you!
me: why?
lena: you have like a nipple erection or something!

another name for it is nippleITITS
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