Worlds Collide 

An expression used when someone introduces a real life friend to their internet life, or on rare occasions, vice versa.

User 1: Hey guys, this is my real life friend. I got him to make an account.

User 2: WORLDS COLLIDE!!!

Worlds Collide by Sonic101 March 1, 2009

Worlds Collide Theory

A theory which states that a man must keep his personal life (i.e. friends) separate from his relationship side (i.e. girlfriend). Should the two worlds come into contact with each other (by means of his girlfriend becoming friends with his friends), both worlds blow up.

"If Relationship George walks through that door, he will kill Independent George! A George divided against itself, cannot stand!" - George Costanza

Worlds Collide Theory by Elmer January 22, 2005

When Worlds Collide 

When Worlds Collide is A FPS series That takes place during WW3 where America and Russia fight for world power. During the third game A X planet 1/4 the size of planet earth crashes into earth, This "X Planet" Has materials that can be used to make weapons mankind has never even imagined as described by: Ghost. During the 4th game Ghost enters a Nazi bunker with over 400 Nazi symbols causing the ban of When Worlds Collide. In the 10th game Aliens come to earth to get back their resources which were used to build weapons causing war. During the 16th game Ghost kills the alien race. 20th game Ghost Ends WW3, Ghost Stops Alien Invasion, Ghost Kills All World Powers, And Then Commits Suicide.

When Worlds Collide Was suppose to be the number 1 top selling game of 2013.

When Worlds Collide by Battery Inc. June 28, 2013

Syrup Arc (Worlds Collide Roleplay) 

The beginning arc to a very chaotic, multi-dimensional, and extremely gay frog crossover roleplay

Person A: I was a part of the Syrup Arc (Worlds Collide Roleplay).
Person B: How the frick do you keep track of everything in that rp?
Person A:

Person A: I don't.

Syrup Arc (Worlds Collide Roleplay) by Echooooo November 1, 2021

Worlds colliding

When two separate aspects or relationships in a persons life collide: your friends (one "world") become friends with your girlfriend (a separate "world").

Popularized by The Seinfeld episode "the pool guy", in which Georges Costanzas' girlfriend forms her own friendship with Georges' platonic friend Elaine (Causing Georges' worlds to collide).

Kramer: 'Jerry, don't you see? This world here, this is George's sanctuary. If Susan comes into contact with this world, his world's collide. You know what happens then?'

<Kramer puts his hands together and makes explosion sounds that exemplify what happens when there are worlds colliding>

KRAMER: 'Ka shha shha shha Pkooo!'

Worlds colliding by Donjulio78 October 30, 2009

Worlds Colliding

When a good friend of yours becomes good friends with another good friend of yours.

Mike: My good friend Chris met my good friend Devlin today, and they liked each other!

Kathy: Worlds colliding!

Worlds Colliding by Mike Cirelli November 22, 2009