jass 

a pejorative term, can be used to belittle or insult someone. Can also be used in place of many other unrelated words; he jassed up his knee pretty badly.

he really jassed that one up.
he pulled a jass.

jass by rob b September 20, 2004

Jass 

South Korean k-pop group member Joy/Park Sooyoung from Red Velvet has the perfect body. One of the few kpop girls called thick that actually is thick. Joy + ass

Remember that girl who got shocked by jass? Same.

Jass by Joysmaid June 19, 2020

jass 

Not only can in be used in the sense Robert has outlined, but it may also be used in languages other than English.

Krauton besukken da Jassein.
Il y a un Jass.

jass by Crouton October 16, 2004

Jass 

is the slang use of "Yes" but more exciting answered, used mostly between teens; the spelling of the word can be having one or multiple "S" at the end.

Person 1 : Are You Coming to the party?
Person 2: Jass Girl.

Jass by Yesforpizza March 10, 2017

jass 

big o ass, a nice ass

dag, that girl has gotz sum jass.
yo rob, did u hit up that jass?
yo shaniqua has got sum bik-ass jass

jass by Jun YAYER July 5, 2006

Jass 

Being a jerk and an ass

Stop being a fuckin jass.

Jass by Nicak October 9, 2016

jass 

Some who is a jackass

you are a jass, you fucko

jass by Steverson Johanna November 7, 2005