istf

i swear to fuck
i personally use this a lot bc i don’t believe in god it’s a substitute for istg

bro istf if my downstairs neighbors don’t stfu in t minus 2 seconds imma kms

istf by gh0st_bxnny25 July 2, 2021

ISTFG 

I swear to fucking god. More violent then just I Swear To God

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2 seconds later

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1 second later

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Reply: ISTFG if you don't stfu.

ISTFG by a.Ayala December 25, 2010

istfg 

i swear to fucking god

Istfg that girl is annoying

istfg by chickennuggets59 February 20, 2018

ISTFI 

ISTFI anagram for "It sure the fuck is."

Ignorant schmuck: "Who is that with Jocko in his big masculine truck...what are they doing?
Totally acceptant person: "You ignorant homoidiot- that's Rocko and Jocko making out (in Jocko's big truck.)"
Ignorant schmuck: "ISTFI! Hell, I didn't know they were gay."
Totally cool person: "See, not all gay people are obviously gay...whatever that means."

ISTFI by Neddy_Ludd April 14, 2006

IstfgIwkms

IstfgIwkms - I swear to fucking god I wanna kill my self, another way to say I wanna kill my self without saying kms (Kill myseld)

"IstfgIwkms PLEASEE my head hurts so much" - Person 1
"what does that mean?, IstfgIwkms, what does it mean?" - person 2
"it means "I swear to fucking god I want to kill my self" - person 1
"oh ok!" - person 2

IstfgIwkms by MIASMAMAAA September 12, 2023

ISTFC 

Acronym for "I swear to fucking Christ".

An irreverent expression of distrust rooting from prior deep-seeded emotions of hurt and betrayal. Usually given as an opener for a cause and effect scenario. Similar to ISTG, but more severe.

ISTFC... If I need to see my shrink again after this, I'm quitting it for good.

ISTFC by P3NT4 November 21, 2024

istfcoe 

(abbr.) i swear to fucking christ on earth

“Did you refill the ink on the printer?”

“No, I thought you were doing it.”

“istfcoe John, I literally asked you yesterday morning to do it.”

istfcoe by waitwhatdoiputinhereagain August 31, 2025