ITTF 

I think that's funny.

A response to something very funny, worth laughing at, but not quite rolling on the floor laughing ROTFL or laughing one's ass off LMAO

Can be used both online and in general conversation.

Brandon says: Why did the fish get kicked out of school?
Tara says: I don't know why?
Brandon says: Because he was caught with seaweed.

Tara says: Oh man hhahah ITTF!!

ITTF by Bailes Braun August 6, 2009

ITTF 

International Table Tennis Federation. It is the highest governing body of the sport of Table Tennis. It is led by representatives from England, Germany, and Hungary.

In 2000, the ITTF instituted several rules changes aimed at making table tennis more viable as a televised spectator sport.

ITTF by Amaranthian October 8, 2008

ITTF 

I'm trying to fuck

Me: Damn ittf

Bad bitch: OMG lol rn really???

ITTF by Moe slango October 8, 2019

ittf 

I Think That's Funny.

Used instead of 'lol'.

person one: Damn! I just lost the game.
person two: haha ittf!

ittf by magic055 December 5, 2009

ittfn

I think the fuck not

Boy: I'm tryna get right with you girl, stop playing with my feelings

Girl: Boy, bye😭. Ittfn

ittfn by Ilovemyniggadick March 22, 2017

ITTFWU 

"I think they're fucking with us"

P! on Haruko's vespa... why?

ITTFWU...

ITTFWU by takkun January 1, 2005

ITTFNYTAB 

I Think The Fuck Not You Trick Ass Bitch

Boy: Hey you're cute, wanna go on a date?
Girl: ITTFNYTAB

ITTFNYTAB by ZoNavy October 25, 2017