Designated Sober Friend.
That one friend who doesn't drink or smoke at all, but comes with you to all the parties. Sometimes they might get made fun of, but you can always depend on them to get you home.
"Hey, wanna hit up Delta Upsilon tonight?"
"Sure! I'll grab Katie, she's a great DSF."
AKA Dungloe Street Fighters.
Group of youths who terrorize the small, usually peaceful village of Dungloe in Co. Donegal.
Well known locally for their unforgiving Mafia style leaders, the DSF regularly steal from The Cope and have been the main reason why Dungloe haven't won the Tidy Towns this last few years.
Did ya see that flower pot dug up in yer wan's garden?
Aye, the fucking DSF are at it again >:(
Dick Sucking Face. The face you make when you suck dick. A play off of DSL (Dick Sucking Lips)
"She has a pretty hot DSF"
Primarily used by antifats as a greeting.
Other usage may include: expressing excitement, expressing happiness, or a taunt towards fats.
"They're shutting down Internal Affairs."
"That's very dsf."