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Free Shit Day
A day in which free shit is given out to people, or in which people help themselves to free shit.
Yeah, it was FSD!!
FSD by herb.lachelt June 10, 2011
fun sponge dad
A dad who sucks all the fun out of things.
Daughter-Hey dad can we go see a movie?
Dad- nope that boring.

Daughter- stop being a Fsd
Fsd by Okayo June 30, 2020
Jake: that kelly girl seems tight.

Blake:Dude shes just fsd, she'll get with anyone.
FSD by M.Slaughter October 27, 2008
The little boy got sick on the mattress so his dad threw it away on the curb and called it a “full scale disaster”. The mom was at her friend’s house and they laughed at that being described as a full scale disaster. Hence FSD was originated. The women laugh about it to this day! Always laugh and use the term loosely and in fun.
FSD by NADANN May 25, 2023
An abbreviation used by Runescape addicted marijuana fiends meaning "for sure dog"
'You tryna throw down on some of that Old School Scape?'
'FSD'
fsd by quaero December 5, 2015
Trevor: Yo, did you do the homework last night?

Carl: FSD! No, I forgot!
FSD by Tickie February 24, 2009