Erect Nipples
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.
Example:
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?"
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?"