wack 

something that really sucks.

also a quote from a vine where a black man just yells

his hair? WACK
his gear? WACK
his jewelry? WACK
his foot stance? WACK
the way he talks? WACK
the way he doesn’t even like to smile? WACK
me? I ‘ M T I G H T A S F U C K

wack by olivaègay November 28, 2018

Wack 

Perplexingly unsavory; “off”; unusual/weird in a bad or uncomfortable way; confusing and unsettling; hard to understand (and often not worth the effort to try to understand)

Yeah, that math teacher was bad, but the school just fired him out of the blue!
That’s wack, dude.

Wack by IstanbulKedi June 15, 2019

wack 

an adjective used to refer to something crazy, weird, and/or unbelievable

Amir: Yo, did you see mr. brown break dancing in his cow costume?
Zach: Yeah, that was wack bro

wack by ur b1tch November 22, 2019

Wack 

Something that just plain sucks, or isn't cool at all. Lame.

The new star wars movies are so wack.

Wack by Ben November 22, 2003

wack 

1. To be of low or dubious quality. Origin: comes from 'whacky', which evolved to 'whacked' or 'whacked out'. Eventually shortened to 'wack'. The 'h' is usually dropped to differentiate the meaning from 'whack', which is to hit something hard or, kill (old wise guy terminology).

Yo, my dog, those shoes are wack.

wack by Paul October 13, 2004

wack 

1) Lame, sorry ass, aint even legit

2) To Jerk off

Example 1:

Tracy: I'm all that and a bag of chips!..and then some!

Rob: Shut yo wack ass up!.. and gets off my Grill.

Example 2:

Tracy: What did u do last night?

Rob: I was wacking my dick ...RAW... thinking about you.

wack by Shady Ass Rob February 4, 2003

wack 

When you commentating a ping-pong ball match

Guy 1: hits ping pong ball
Guy 2: hits ping pong ball
You, the commentator: wack wack wack wack wack wack

wack by foop629 August 18, 2019