Either someone who makes you laugh, someone who is the bomb, or if used sarcasicly,a massive tool usually on xbox live.
1. Tim: Did you hear Toms dirty joke?
Pat: Yeah, what a roflbacker.
2. Jim: 15 killstreak!
Hornito: Dude you are a roflbacker.
3. (Jhonny get spawn killed) Wow you would spawn kill me, what a roflbacker
Pat: Yeah, what a roflbacker.
2. Jim: 15 killstreak!
Hornito: Dude you are a roflbacker.
3. (Jhonny get spawn killed) Wow you would spawn kill me, what a roflbacker
by serigka'rfgm]efgdfgafgaersdfas June 03, 2010
Get the Roflbacker mug.