swamp thing 

When you are having sex (preferabbly unprotected) with a girl (must be vaginal) and you cum, you pull out quickly and reach in her pussy. When you grab some of her secretions and also your own, you smear it all over her face and go "Swamp thing!" This is a variation on "WOLFMAN!"

Dude, last night, I totally swamp thing'd this girl. She was so pissed, but I just laughed because she smelled like shit.

swamp thing by Jolly Green Giant Penis September 4, 2006

Green thing 

A green thing

Wow! I can't believe I farted out a green thing!

Green thing by Iggy128 June 26, 2004

the best thing ever 

when a light is flashing in your face as you spin around in a circle

on duke of edinburgh expeditions people will do the best thing ever to each other with headtorches as a way of making friends

the best thing ever by harrypotterlad November 30, 2009

There's no such thing as free lunch

A phrase that suggests sexual favors will ensue the current meal.

The Girl Next Door: Thanks for taking me out, I'm having a great time!
Big Man on Campus: There's no such thing as free lunch. Let's fuck.

There's no such thing as free lunch by Dan Mit September 26, 2006

that thing across the road from 19 fairways drive, burnley 

a small little tree-lined alleyway in between two roads on one of them nice estates, eee the days i remember going down that flutester, or the ginnel as we called it, eeee

go down it, lads!

that thing across the road from 19 fairways drive, burnley by JimmyK September 18, 2003

do your thing 

Something said by a female that means DO NOT DO IT AGAIN. Usually slang

“You’re not my boyfriend. So do your thing.”

do your thing by Locqa January 3, 2018

one thing led to another 

A phrase used by men when telling stories. This phrase is used almost inevitably referring to sex.

We went back to my apartment and started watching the movie. well, one thing led to another and the next thing you know i'm banging her

one thing led to another by Moomoomoo2 October 21, 2008