sex rat 

Matted section of hair on the back of a long-haired guy or gal after a night of debauchery.

Ew look at that sex rat - I know what he was up to last night.

sex rat by teej haystack May 24, 2014

sex rat 

Girl that enjoys having sex with fecies.

Wow! Rhonda is a sex rat..last night she told me to shit on her titties and smear it upon both of us while having amazing sexual intercourse. What a great sex rat!

sex rat by Head dick November 21, 2007

rat sex 

To have raw sex with many people you don't know while wearing a costume, that looks like a horse head or rat

I got some std from that wild rat sex

rat sex by Ben Dover & Sharin needles September 30, 2015

dead rat sex

Having oral sex with a dead rat by cutting its mouth wider and ripping its teeth out, and crushing its organs with your penis

I had the most amazing dead rat sex last night

dead rat sex by Phtv14 May 28, 2008

sex-rated 

IN BRIEF: anything based on sex, sex appeal, sexual attraction, sexual seduction, etc.

Music on TV and the radio is becoming more of a bad example to these kids cause it's too sex-rated.

sex-rated by Mr. Terrence L. Trezvant August 14, 2010

sex ratio 

a ratio used to determine approximately how many days a week your partner expects to have sex- see example below...

joe: So Gina, how many days a week do you expect to have sex?
Gina: I'd say about 3 days a week...
joe: Right, so your sex ratio is 3:7
Gina: What?

sex ratio by Wrath of kleptos October 22, 2008

[sex] ratio 

A term used to define how many days a week your partner expects to have sex. See example below...

Joe: So Gina, how many days a week do you expect to have sex?
Gina: I'd say about three...
Joe: Right, so your sex ratio is 3:7...
Gina: What the f**k?

[sex] ratio by Wrath of Kleptos October 22, 2008