dead fuckin last. as in a sporting event or race. or anything else you can get last in.

DUMB FUCKING LIBERAL, the official name of the Minnesota Democratic party

Dunce For Life --> A title given anyone that makes so many repetitive mistakes that they should just give up on life, sit in the corner, and wear the hat.

Dying From Laughter

Down For Life, i.e., someone who's got your back, always with it, and commands respect.

dead fucking last.
basically you suck ay whatever youre doing.
AKA nicole lightfoot

DFL is an acronym for "Deceased from Laughter". It first originated during the 70's, around the time that such slang became widely used. However, it was lost, and only resurfaced again in the late 90s. It was spread mainstream by a popular sitcom that aired on a small Indie broadcaster, but was later bought and re-made by BBC. "DFL" was the punchline by Susan Lawley, the star teen of said sitcom.

It died alongside the show, but was later brought back in MySpace.