Failcrab 

During a well populated match of Zombie Attack on Garry's Mod, someone who tries to get past a human barricade while playing as one of the headcrab classes, yet fails and just gets in the way. Usually seen in packs of 5 or more.

Man, get the hell out of the way you failcrabs!

Failcrab by Prizzin secks January 13, 2009

Fail of Failcraft 

A MMORPG that is only intended for total video game whores, since it involves you doing the same thing over and over again. People who play it are confused into thinking they're receiving sex, so they actually pay money.

If you like games that take skill, Fail of Failcraft is not for you

Fail of Failcraft by Xtreme2252 July 19, 2009

World of Failcrack

A game that is so addictive, you won't realize how shitty and pointless it really is until you've wasted your life and lost all your friends.

World of Failcrack is like the virtual version of crystal meth

World of Failcrack by Xtreme2252 July 20, 2009