Co Star 

Definition: highest form of ambiguous sarcasm; or pat on the back to your second bestie.😎

(Sarcastic) Your such a co star🙄... or

(Positive) Bro,,, co star! Hi five 👊

Co Star by Trick@!@ June 21, 2019

costarring 

Present participant of costar

Two friends who have a sexual realtionship without being emotionally involved.

The verb of having a friend with benefits

From the spanish root acostarnos, translates to "lets have sex"

Ilana and I are costarring

costarring by Gabriel Martin April 6, 2013

CoStar 

An app that confused college girls use to put meaning to their random hookups and drunk rampages through use of astrological pseudoscience.

Omg last night I hooked up with my exe’s sister’s bestfriend’s brother after eating Olive Garden, and today my CoStar told me that “an adventurous pallet is key to a bold experience.” Like CoStar knows me too well

CoStar by Man Whore 6969 February 11, 2020

ko costarella 

a beast at swimming and "with the ladies".

...that ko costarella kid sure is a beast at swimming! and not to mention, "with the ladies"...

ko costarella by nrg930 May 8, 2009

costard 

Someone devoted enough to a TV show, movie, or comic to dress up like a character from it; a cosplayer.

- What's up with the stupid clothes?
- Nothing, they're just costards.

costard by Jeremy March 1, 2005

costar 

The mix of coors light and Rockstar

This costar is freaken delicious!!

costar by slickchip September 3, 2009

costaricanbk 

This word is used to describe a wanna-be stud. They usually believe that many girls, and a few guys, are very sexually attracted to them. Many times they will try their moves by showing off their SF skills.

Head: wow did you see that shot I just made? Shot: yeah he must of been a Costaricanbk. He is going to need an aspirin for that headache.

costaricanbk by Morgiex December 23, 2010