Ununderstandable 

1) Preposterously insane.
It can mean something that is insane beyond someone's wildest imagination, to the point that it becomes contrary to reason or common sense.

2) Something that is really hard to understand, which has to be repeated twice, or thrice before one fully comprehends it. (It can't be over 7 times, otherwise it would be: Unununderstandable.)

3) Something that is unacceptable, and intolerable (esp. by whole societies, or religions.)

1: “Hey, Steve. Why is six afraid of seven?”
“I don't know, Tim McGomnrey. WHY is six afraid of seven?”
“Cuz 7 8 9. Haha..”
“HAHAHA... WAIT... THIS IS UNUNDERSTANDABLE!!”
*****************
2: “And this is why Americans like potatoes.”
“Professor, can you repeat that last part 3 more times?”
*The professor literally repeats it 3 more times*
“It's still ununderstandable, professor!”
“Get the &$@% out you little piece of #%£¥!!”
*****************
3: “I said I wanted a decaf! This is NOT a decaf! This is irregularly ununderstandable on so many levels, you are ALL fired!!”

Ununderstandable by Mr. Padwan. September 30, 2012

ununderstandable 

un·un·der·stand·a·ble {uhn-uhn-der-stan-duh-buhl}
–adjective
incapable of being understood, failing to be understood correctly.
{derived from that of Michael Scott; see misunderstood}

"Any man who says he totally understands women is a fool, because they are ununderstandable." -Michael Scott

ununderstandable by absofruitly February 10, 2008

ununderstandable 

it's not possible to understand the subject or sentence

That is ununderstandable!

ununderstandable by sunny laurie January 10, 2019

Ununderstandable 

Women

Any man who says he totally understands women is a fool. Because they are ununderstandable.

Ununderstandable by anonymous August 28, 2021

ununderstandable 

Paradigm of the modern time.

I 'clicked forward' today and you all only saw maya.

ununderstandable by JathnTrav June 19, 2004

understandable have a nice day

It is understandable, so you may have a nice day; even if you didn't get your ice cream from McDonalds.

"Hey you got some food?"

"Sorry food broke"

"Understandable have a nice day"

understandable have a nice day by That gouy May 22, 2017

understandable, have a great day 

A recent spicy meme in which a black man is at a drive-thru window requesting food, only to be told that "food broke." He understands, and tells the worker to have a great day.

Customer: "Hello, Food?"
Worker: "Food Broke"
Customer: "Understandable, Have A Great Day"

understandable, have a great day by Drew G The Spicy Meme June 1, 2017