ISTG

ISTG is short for “I Swear Too God”

Rick: ISTG if Bill isn’t hear soon I’ll hack his roblox account

by ShitCuntfromStraya December 30, 2018

Istg stfu

Mk at this point, don't answer this person to be honest. When someone says "Istg or Istg Stfu". Just seriously they, you lose, give up. You're only going to dig yourself deeper by talking

Omg, "Istg Stfu" Can u seriously stop dumbass

by ThatEboyyyyyyy March 9, 2021

Istg

Istg means " i swear too god "

istg i didnt do ur girl man

by Deizomando September 5, 2023

ISTG

Slang - I swear to god
Most used by gen z People

ISTG YOUR MAKING ME MAD

by ☁ cloudy_rainz ☁ September 10, 2021

istg

i swear to god i a shorter way

istg if you dont get down from there

or
you are so annoying istg

by 2xsugacube February 5, 2021

ISTG

I swear to god.

Person1: What does ISTG mean?
SmartySkittlethatssus: “I swear to god”

by S0mEone ; Dad June 1, 2022

ISTG

Acronyms for “ 𝘐 𝘴𝘸𝘦𝘢𝘳 𝘵𝘰 𝘨𝘰𝘥”.

Mostly used in 𝗧𝗲𝘅𝘁 𝘁𝗮𝗹𝗸 (mobile phone text messaging) or online in general. Normally not used in real life daily conversation.

Dick: Did you realise your name backwards is “I moan”?
Naomi: FFS 🍆 say one more thing about my name and ISTG... I'll circumcise you!
Dick: 🍆? Omg you don't even 𝙉𝙖𝙤 𝙢𝙞?

by UseHerFKNName July 14, 2025