IGTDY 

if you’re feeling secretive and want to absolutely deck your friend use the phrase IGTDY which literally means i’m going to demolish/deck you

if you don’t shut up right now igtdy

IGTDY by sillygoob February 23, 2022

istdyg

I'm sorry to disappoint you guys

Texting
"You didn't come to the movie?!"
"Istdyg"

istdyg by Texting wiz February 1, 2015

IGTKYMFA

I'm Going To Kick Your Mother Fucking Ass

Jared, IGTKYMFA! (and Jared cowers under the foosball table)

IGTKYMFA by Gally October 27, 2005

IGTSYF 

Short hand for "I got to shit you fucker" often used when caught in a situation that requires a desperate out.

Strong example is when a retard follows you to the bathroom and just won't leave. They just keep talking about dumb shit to you.

When stuck talking to the fatass chick when you just want her hot friends number.

Hey man did you watch the discovery channel's documentary about dicks?
GOD DAMN IT IGTSYF!

IGTSYF by Don Juan from the north June 16, 2009

igtfys 

I’m going to fuck your sister

Person 1: Stop being an ass or igtfys

Person2: I don’t know what that means, but I’m uncomfortable.

Person 1: You should be, I’m about to make you an uncle

igtfys by Goblintheboblin December 30, 2021

igtsy

It's good to see you.

Hey babe, igtsy.

After not seeing you yesterday, igtsy.

igtsy by Kylie Wills May 14, 2022

igtsy

It's good to see you.

IGTSY as I've been missing you.

It was tough being away from you, but now IGTSY.

igtsy by Kylie Wills May 14, 2022