trinning 

the act of performing or posing in triplet form; triplets posing for a picture; three persons or things that look alike.

Now that would make a nice trinning picture.
triplet pose

trinning by commdude April 4, 2016

friend thinning

The act of deleting friends on Facebook whom you haven't talked to in a long time and/or don't plan on talking to again. Sometimes done to escape bad memories of a person or past.

I've gotta do some serious friend thinning... I've got 2000 friends on Facebook and I haven't talked to most of 'em since high school.

friend thinning by imbrianfellow November 16, 2010

Twinning

A take on the popular term "winning," it refers to identical thoughts or behavior, as well as to brilliance.

Person 1: "Oh my gosh, I was just about to say that!"
Person 2: "TWINNING!"

Person 1: "Uh, we're wearing the same sweater?"
Person 2: "TWINNING!!"

Twinning by .,.,.,.,.,. January 6, 2012

Twinning

When someone and their friend say or think the same thing, they are "twinning"

Martin was twinning with his friend, Jonathan about their hobbie

Twinning by Lil Korean kiddy March 31, 2015

Twinning

The act of transforming one person into a clone of another person, examples often exist within the TG/TF fetish side of the internet.

"Have you ever seen the second and third Matrix movies? Agent Smith just goes mad and starts twinning everyone."

Twinning by Raatilam May 10, 2018

Twinning

When you and someone else are matching clothing

Oh my god! Did you see that? They are both twinning the same prom dress!
DAMNIT!

Whats wrong billy?
NOW I CANT TELL WHICH ONE IS MORE HOT
Uh... You're 68
UH YEAH, BUT I STILL GOT SOME MILK LEFT IN ME
What the actual fuck-

Twinning by CheesyFriesWithExtraCheese October 20, 2019

tronning

The act of love in which a man ejaculates on the bed and walls and lets it dry so that when a black light is applied a la CSI, the room looks like a scene out of TRON the movie.

The hotel guest was so displeased with his room service, he started tronning the room to get back at the maid service.

tronning by Hazel Meyer December 26, 2010