sfd

Short for So 'Fucking Down'.

Friend- lets go to the party!
Friend 2- ok sfd!!!

SFD

So Fucking Dead/ded or so fucking done

Dumb bitch: yeah he cheated on me, but said he didn’t mean it, so I forgave him

Friend: sfd you dumb bitch

SFD

Shitting For Diatance
A contest in which participants compete to see who can shit the furthest.

Brad's callipygian team selection looked set to dominate SFD this year

sfd

Sex for day

“I came across this sfd account on Twitter.”
“Oh that’s unfortunate for you little poor thing!”