Roosterteeth + Trials Evolution Multiplayer = Mayhem + Comedy

Warning: Possible Not Safe for Work. 

Maybe with headphones, you could get away with it.

Trials Evolution is video game for the Xbox 360. It is a motocross racing game set in a variety of tracks. The game is played from a third person perspective and is really fun to watch. The variety of tracks is tremendous and the developers have released a track editor that is so flexible, players have made other games like a Missile Command and a third person shooter. Although they are several intros and trailers to the game, I like this from RoosterTeeth because it gets directly to the gameplay and the game itself. Most others are just loud for being loud's sake and have intros of their own that take up almost half the time of the video. 

It also has multi-player and the guys at RoosterTeeth take a crack at it. The result is possibly the funniest video by the guys at RoosterTeeth. Just a bunch of guys having fun. It's like you are a friend in the same room watching. Obscenities abound. 

A friend of mine laughed so hard, he had to leave and ask for the link to watch later. 

To prove how flexible this game's track editor is, here are the Missile Command game and the third party shooter (watch out for the flying saucers at the beginning).

I guess not to be outdone, the developers themselves released this track which is basically Angry Birds ... with bikers.