I know you are but what am I 

A comeback that breaks everyones ankles in a matter of seconds

kid 1: Your super fat
kid 2: I know you are but what am I

I know you are but what am I by thatperfectkid101 May 10, 2023

Y'know, there's more to me than just my tits! 

What a cute southern farmer's daughter gently remonstrates to a lustful stud who's having touchy-feely fun wif her delectable warm soft naked self in da hayloft.

Blinky-eyed buxom chick, giggling a bit after her new guy has made her velvety-smooth DD-cup chest-pillowz absolutely numb and tingly-nippled from his having thirstingly suckled and kneaded them in his big hands for fifteen minutes straight: Y'know, there's more to me than just my tits!
Guy, drooling pre-cum from his huge hard-on: Oh, I know there is, Sweet Cheex --- you're delightfully soft and warm all over, and I definitely want to savor every square inch of you! I just can't bring myself to let go of THESE gorgeous heavenly-feeling things yet!

Y'know, there's more to me than just my tits! by QuacksO July 12, 2023

I know there's still good in you 

I cliche said by chicks in movies when their boyfriend goes on a villain arc

Peter: "I know what I have to do"
Jane: "you don't have to do this! I know there's still good in you!"

I know there's still good in you by Saulman500 July 14, 2023

super know it all 

individual who knows more than everything way beyond the norm.

the super know it all always has more answers than you actually need.

super know it all by anonymous July 24, 2023

I know you are but what am I 

Something you say when you know your joke was wack but don’t want to admit it.

Guy 1: If you’re going to eat your words, spit them out and eat them again!
Guy 2: That joke was ass.
Guy 1: I know you are but what am I.
Guy 2: 🤦 ♂️

I know you are but what am I by Ass_Gobbler69 September 9, 2023

I know! Right?! 

It's pretty clear what the speaker is trying to convey: "I agree."

I agree with most of the other definitions, which provide details on the subtle context/audience-dependent connotations. I agree that phrase is annoying, used by speakers who use other annoying phrases like "my bad."

I would like to add to what has been said by providing side-by-side analogs; that is, alternative, equivalent but more acceptable expressions.

Example Expressions

I can't handle this idiot any more!
I know! Right?! OR Damn straight!

In wish I brought my swimsuit.
I know! Right?! OR You're telling me!

I like this 'double it for a buck' happy hour!
I know! Right?! OR You can say that again!

I was gunning for Miss Tipsy, but I just got shut down by her fat roommate!
I know! Right?! OR Join the club!

This is good sauce.
I know! Right?! OR Yes, it is.

Let's not go to the Bubble Club. It's so damn expensive!
I know! Right?! OR You got THAT right!

I have an idea: let's strip and go wallow in the mud puddles.
I know! Right?! OR You're preaching to the choir!

Our corporate holiday event was so cheap it was insulting.
I know! Right?! OR I couldn't agree more.

They are good at talking all sexy.
I know! Right?! OR Mmm hmm!!

This is the correct line for us.
I know! Right?! OR Right you are.

Tacos.
I know! Right?! OR Yeee-ah boooooooyeeee!!

We're in trouble NOW.
I know! Right?! OR No shit.

Tonight, we wear The Boots!
I know! Right?! OR Fuckin A right!

I know! Right?! by TimmyT-SF November 28, 2023

You know kris kristofferson? 

Well i am piss pissofferson

You know Kris Kristofferson? Well i am Piss Pissofferson. Pauls asking for christmas off again, i say "no" then i spit this song for him.

You know kris kristofferson? by Urban dictatur December 3, 2023