I stg 

This acronym means “I swear to god.”

“Bro these finals got me fucked up I stg”

I stg by Silly_poots December 15, 2019

istg 

I Swear to God. Promising

She asked him out, istg!!!

istg by Dank Frank January 3, 2008

istg 

I swear to God~ it is a way of express you're being honest about something or expressing extreme annoyance at someone.

Friend~Your such a liar you dad didn't buy you a Lamborghini.
Me~He did, istg!

Friend~Ha Ha my parents are richer than you
Me~istg you so annoying ;-;

istg by XxZoexX July 27, 2020

Istg 

Istg is short for I swear to god

Istg, Hoseok is a ray of sunshine

Istg by Weird.flex.but.okay. February 18, 2019

istg 

I swear to god.

Jim : I ate your leftovers in the fridge 😛
Chloe: Istg if you did ill kill you!

istg by barbz 😍😛😋 February 1, 2021

istg 

I swear to God~ it is a way of express you're being honest about something or expressing extreme annoyance at someone.

Friend~Your such a liar you dad didn't buy you a Lamborghini.
Me~He did, istg!
(XxZoexX old acc)

istg by zoe ellys May 10, 2021

ISTG 

I swear to god

Istg someone just sent the most cutest paragraph ever

ISTG by Umaiya&Aman June 26, 2018