1. Someone that knows nothing about a pc or technology in general.
2. Can also be used to refer about playing different classes in World of Warcraft. At the time of this writing players with Rogues and Warlocks are known to be facerollers in PVP. That is, it doesn't take much skill to play either class, just someone rolling their face on the keyboard can rack up honor in PVP.
1. "My mom is such a faceroller when it comes to pc's"
2. "Dude, I facerolled my way to PVP epix!!111oneone"