YDKMS 

You Don't Know My Story

Boy: you're such a slut

Girl: YDKMS

YDKMS by ohqodihtsxkrissy February 19, 2011

YDKS 

You Don't Know Shit

I got an F on my Math Exam. YDKS bitch!

YDKS by AspGod March 1, 2011

YDKSAB 

Abbreviation for: You Don't Know Shit About Boxing

Shortened version of the phrase coined by esteemed boxing trainer Roger Mayweather who used to it describe the lack of real boxing knowledge possessed by boxing journalists and fans.

Pactard : Marquez is a cheater, he is on PEDS!

Sane Person: YDKSAB, Manny got KTFO because he lunged in and got caught.

Pactard : Your a flomo, Floyd is a chicken.

Sane Person: *facepalm*

YDKSAB by Intentional Butt January 18, 2013

YDKS 

You don't know shit.

YDKS about pokemon.

YDKS by epic meal time shit talker February 22, 2011

YDMS 

YuB Deserves More Subscribers

YuB: CAN WE HIT 1000000 YUBSCRIBERS!?!??!
Me and some other fans: YDMS! YDMS! YDMS!

YDMS by I want to die lol June 19, 2020

ydkm

You Don't Know Me

person A - "i always knew u were weird"
person B - "ydkm bro"

ydkm by kkalopsiiaa June 19, 2023

ydkmp 

the abbreviation for you don't know my pain, mostly used over text to describe that somebody doesn't know your pain.

Jeff: "My dad died."
John:" Both my parents died, ydkmp."

ydkmp by SabuRobert February 9, 2024