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CF

Casual Fuck. Different to Friends with Befinfits as you are not friends but are classified as acquaintances that's fuck on a casual basis.
I really need a CF.
by Causal fuck February 9, 2017
mugGet the CFmug.

CfS

I am medically exempt from wearing a mask, I have been diagnosed with CFS.
by Truther4 November 22, 2021
mugGet the CfSmug.

CFS

“CFS” Common Fucking Sense
No I can’t wear a mask in the store. I’m exempt. I suffer from CFS.
by Patriot Plumber April 12, 2021
mugGet the CFSmug.

CFS

Short for common fucking sense.
"Sir can you please wear a mask"

"I'm exempt. I have CFS."
by chadsetti69 February 9, 2022
mugGet the CFSmug.

CFS (Chicago Fan Syndrome)

When you have the irrational belief that you home team with be victorious despite all the bad decisions they make.
DaBears were down by 21 with under 2 minutes to go but my CFS (Chicago Fan Syndrome) knew they would somehow pull off the win.
by MoreDumbStuff November 15, 2020
mugGet the CFS (Chicago Fan Syndrome)mug.

CFS

“Hey, are we hitting the lodge for CFS? “, “Let’s get our CFS on this morning!”
by BrahmaBull March 30, 2025
mugGet the CFSmug.

CF

An abbreviation for "childhood friend." Meant for online, but never in real life, because that would be weird.
(texting) "ye bro, we've known each other for a long time, he's my CF"
by LuckyFalco November 24, 2021
mugGet the CFmug.

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