Ain't shit 

Describing one as if they are nothing

And_You_Hype on Twitter ain't shit.

Ain't shit by IAintShit_Yet May 22, 2016

ain't got 

rhythm

No I ain't got rhythm.

ain't got by KeithBar October 17, 2020

ain't slick 

When you get caught doing something / don't cover your tracks / are a general fuck up

She was bitching about him over Instagram messanger but forgot she was logged into her account on his phone. This bitch ain't slick!

ain't slick by Alessandra Mendoza April 28, 2017

ain't gonna hold you 

Not going to lie to you, try to change your mind, or interfere with someone's ideas.

"yo man, Brittney got the fat ass my guy..."

"That's facts, she got the clap, but I ain't gonna hold you she's still lookin' righteous"

ain't gonna hold you by Addict Not a Fiend August 6, 2017

Ain't No Thang But A Chicken Wang

An alternative to saying "you're welcome" or "no problem."

"Hey man, thanks for helping me bury that body"
"Ain't no thang but a chicken wang"

Ain't No Thang But A Chicken Wang by Mrminibagel December 31, 2014

Ain't that some shit? 

A resigned expression of disappointment at the outcome of a situation, generally one which is unfair or discriminatory.

Popularised by CeeLo Green's 2010 song "Fuck You"

If I was richer, I'd still be with ya. Now ain't that some shit?

Ain't that some shit? by Spud of Doom November 19, 2010

Ain't no hoe in my blood 

Opposite of "punk." Opposite of "coward." Tough as HELL, someone who can get kicked in the ass and still end up winning, by default;
Also a Battle Cry.

"They just pulled up ten deep! You ready to get jumped?"
"Let's go punk! Ain't no hoe in my blood!!"

"I came alone homie. Ain't no hoe in my blood!"

Ain't no hoe in my blood by Major Bingus October 8, 2016