Short for So 'Fucking Down'.
Friend- lets go to the party!
Friend 2- ok sfd!!!
by Loloklolok October 16, 2015
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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
by ghost843 September 4, 2019
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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
by Discreet Mormons September 4, 2023
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Sex for day
I came across this sfd account on Twitter.”
“Oh that’s unfortunate for you little poor thing!”
by jenoswhore November 29, 2019
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