Cynosaurus Ex 

A particularly unattractive ex girlfriend or boyfriend who insists on hanging around you and making themselves the center of your attention. The etymological root word is "Cynosure", an object at the focal point of attention.

"I wish she'd just leave me alone, but she's like a Cynosaurus Ex or something"

Cynosaurus Ex by neoma82 April 21, 2010

Tri-shared Ex 

The former partner of three good friends whom all dated the ex at different points in time.

Robbie shouted at Kat, "don't talk to him, that is Tony, Ryan, and my tri-shared ex!!!"

Tri-shared Ex by Tony Ray Lee October 27, 2007

National have sex with your ex day 

National have sex with your ex is on March 23 where you get to having sex to celebrate March 23 and just have a great time by just fucking.

Oh yes it’s National have sex with your ex day, March 23 , time to text that big booty bitch ;)

National have sex with your ex day by National fuck your ex March 23, 2021

K-Fed-Ex 

The nick-name of Britney Spears or anyone that K-Fed no longer has a serious relationship with.

"Britney and that other woman - They are so K-Fed-Ex."

K-Fed-Ex by y2kiki January 15, 2007

RR-Ex 

Sometimes confused with being Pharmacy or Doctor based name, It really stands for the Pooper of Chests.

RR-Ex owns you. You got pooped on the chest.

RR-Ex by E-Serious December 29, 2007

My political ex girlfriend 

Violet your a dumb bitch

Fuck you, just cause I’m a straight white male doesn’t mean I’m bad :(
My political ex girlfriend she’s “alt TikTok”

My political ex girlfriend by Dumbfkker September 28, 2020

deus ex 

Term used in anime, commonly refering to the main character, used when a character ALWAYS wins, specifically when the character pulls a victory out oh his or her ass, even when victory is impossible.

Yu-Gi-Oh!

(No, really, just watch it, and you'll get it.)

deus ex by Fats McRobot August 17, 2004