Expletive, often used in place of the cleaner "for Pete's sake" or whatever. British/Irish in origin.
Josh said he would meet me at 3:00 but then he dissed me. For fuck's sake!
by Notcha November 12, 2004
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For the sake of all the fucks.

Variant: For fuck's sake. (For the sake of a specific fuck).
For fucks' sake Hancock, what do you think they're doing with the PPE? Dressing up and playing at Start Wars?!
by Superkid16 April 11, 2020
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How the Scottish and Irish spell and pronounce "fuck's sake", or "for fuck's sake".

We don't say that, we just say "fuck sake". Why that would be is anyone's guess, probably just another of our numerous attempts to butcher the English language, which is a fine practice. The likelihood of an entity called "sake" that we are opposed to grows smaller over the years, as far as I can see.
"Johnny it's 8am, you slept in"
"Fuck sake"
by mistahroga September 13, 2020
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Used to express extreme anger at someone or something that needs to be done, or at something that happened, it doesn't piss off any religion, making it like for pete's sake except it is a much greater degree
FOR FUCK'S SAKE ASSHOLE, STOP GIVING ME THAT SHITTY EXCUSE EVERY MOTHERFUCKING TIME YOU FUCK UP!!!
by PISSED OFF!!!! FUUUU September 14, 2013
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1. For the sake of fucking.
2. For the sake of oral sex.
1. For fuck's sake, James, get some treatment for the damned herpes!
2. For fuck's sake, Bob, go vegan! See "vegans taste better."
by Stephanie April 1, 2004
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What u say when you're getting annoyed by a noob.
Noob: How do you shoot?
Experienced Gamer: FFS!!!
by CT August 10, 2004
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