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A person (male or female) that you used to date (but no longer do), but still will sleep with you now and again.
See also Imaginary
Ex: "Hey, I know we stopped dating because you're tremendously creepy, but I think we can at least be sex exes, don't you?"
Other person: (No response; tends not to talk to people he's imagining in his head)
Sex Ex by lsiusA August 16, 2011
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An ex-lover with whom you have sex.
I had ex sex with my sex ex the other day.
sex ex by Oddsock April 17, 2011

Sex Ex Full 

Von seems very happy and sex ex full after leaving Connie!!
Sex Ex Full by tryingnewthings June 13, 2018
(v.) To indulge in sexual intercourse with a former partner.
Have some ex sex-you know what she likes!
ex sex by Gumba Gumba May 26, 2004

Pre-Ex 'Sex' 

The mechanical, uninspired act of passionless intimacy dutifully completed by individuals who's long-term, expiring relationship has fatigued from overwork, emotional exhaustion, diverging interests or mutual contempt.
When you're given under 3 minutes to 'do yer business' while she answers emails and texts...the best Pre-Ex 'Sex'...EVER!
Pre-Ex 'Sex' by YAWA November 24, 2019
Is when your dick feels homesick and nostalgic.
Jokes aside, it's one of the easiest kinds of sex to get.
It may ruin your life an get you on the verge of "please come back to me" bullshit. However, it may also make you "whole" and keep you from idealizing the girl (and reflecting over the relationship you used to have)
I tell our mutual friend "say hi from me when you meet her".
5 days later some crazy ex sex happens. It literally takes you next to nothing to grab some ex pussy action.

I gave Jackie a call and we had some ex sex. Why? He knows my body well, those one night standers don't really come close.
Ex sex by DJ Blowback January 23, 2019
Having sex with and ex girlfriend/boyfriend
Jena is having ex sex with brian
EX Sex by chops1986 November 24, 2010
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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