Short for "Douche bags for life". Often used on Facebook to end a conversation but only after being an asshole to them. Can also be used with another person to intensify the level of douchebagness. Also used for trolling a lovey dovey status or quote on Facebook.
Girl's FB status: Omg, why can't all guys be the same?!
Guy #1: Why can't all girls be the same?
Guy #2: Yeah, bitch. You're probably just attracted to assholes.
Guy #1: Girls are so damn needy.
Guy #2: DB4L.
Guy #1: DB4L.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.