I don't know what X means, but it sounds disappointing 

A phrase used by anyone who knows it. which displays a "I don't care, but i do at the same time" feel when its said.
The X can be replaced with anything, but depending on what X is changes "what" and "means", if its a person, it would instead be "who" and "is".
Usually saying this phrase, they put on a depressed tone and slur their words, specifically "sounds", and "disappointing". Usually said like : "Soounds Disappoooointingg..."

I don't know what X means, but it sounds disappointing.
1. Hey, meet my friend Bob!
2. I don't know who Bob is, but it sounds disappointing...
~or~
1. Try this food!
2. I don't know what food means, but it sounds disappointing ...

I don't know what X means, but it sounds disappointing by Generic Pseydonym January 9, 2017

Bitches don't know 

1.A general use affirmative adjective/response for something that is mind-blowingly awesome, typically somethinng which the lady-folk cannot appreciate. Also used to insult bitches who don't know. See also: Fucking A or Hell yeah
2. The truth/words to live by

1. Guy 1- You wanna play Left 5 Dead?
Guy 2- Bitches don't know.

I was walking down the hall the other day and I overheard two bitchy girls discussing what they didn't know.

2. BDK!

Bitches don't know by MuzzyFromDanviz March 22, 2010

Don’t upvote this I don’t know how to vote 

Help please tell me how to vote without this

Don’t upvote this I don’t know how to vote

Don’t upvote this I don’t know how to vote by Cockandballtortureisgamer November 4, 2019

you don't know the meaning of the word 

The statement is said to express ire and/or contempt. When someone says it, they are saying that the person who used the aforementioned adjective should not be using it, as they don't truly know what it means to feel it. I.E. you had your face melted off, and you broke the arm of someone who pissed you off. You would say "Painful? You don't know the meaning of the word."

Offender: My family are all idiots. I mean, I'm never stop having to suffer their genocide.
You: Suffering? you don't know the meaning of the word.

you don't know the meaning of the word by Tevel February 22, 2014

y'all don't know me 

You aint no friend of me.

"I know you from somewhere." "You aint no friend of me."

y'all don't know me by Quannesha October 21, 2003

she don't know sick'em! 

Southern Ontario rural-ism, meaning, she is dumber than a dog... The longer version of the phrase, which is seldom spoken, is "She don't know sick'em from fetch!"

Did you hear your Aunt Sue, arguing around the table with everyone?! There is something WRONG with that woman! She don't know sick'em!

she don't know sick'em! by Pablo Vertais August 25, 2017

I don’t know what to do

UD Jews, I’m talking to you guys

I’m very confused and am unsure as to what I should do.

My friend said I know the truth and that I shouldn’t be worrying. But things are getting really tough.

Will the stock market crash soon or will WW3 break out soon? That would kinda give me an advantage.

I don’t know what to do.

I don’t know what to do by Zatarain’s Root Beer Drinker January 12, 2023