sweater sex 

1. When two individuals engage in sexual intercourse whilst only wearing a sweater

I have a sweater fetish, so obviously I love sweater sex.

sweater sex by familyguyrox4377 January 8, 2011

Sex Sweater 

The imaginary sweater that keeps you warm after heated sex. Dependening on the weather, it usually only lasts about 15 minutes after sex.

Q- Aren't you cold?

A- No, I'm wearing my sex sweater.

Sex Sweater by Owner of a Sex Sweater January 16, 2011