jas 

Just a Second (Usually used in messenger convos!)

Fig 1: Hey do you have a pic of you GF
Fig 2: yeh jas ill find it

jas by Mattio September 4, 2005

jas 

Acronym for Just a Second. Used to replace the implied longer wait of brb (Be Right Back)

40yr-old-virgin: Are you gonna send that sexy picture of yourself to me!?!?
hot_blonde_43: Yeah of course, jas...jas...

jas by Anonymous999 August 23, 2006

jas 

When someone you know, usually a guy named joey, smells like ass. otherwise known as Joey Ass Syndrome.

Dude your car smells like JAS

jas by a sensitive nose July 23, 2008

Jas 

a usually nice guy, normally half indian and mexican. they can make you laugh, and have crazy mood swings worse then a pregnant lady but tolerable.

"your a nice person, you remind me of jas."

Jas by kristineeeeeeee<333 January 7, 2010

JAS 

Acronym for jealous asshole syndrome which is characterized really jealous people.

omg, that girl had major jas when she dumped her boyfriend.

JAS by jizzyyy April 28, 2009

JAS 

An abbreviation for Just A Second.

used when one is very temporarily unable to communicate within an instant messenger conversation.

generally the shortest amount of time you can be away and still need to announce your absence. JAS<BRB and JAS<h/o (hold on)

1: hey where were you today?
2: (almost finished with a phone call) jas
1: aight
-moments later-
2: back. s'craick?
1: hey cool. where were you today?
2: who me? ah man i went home sick.

JAS by Jordan Dylan Merkin March 19, 2008

Jas 

A word from the place Järna in Sweden for "Yes"

"Can you give me a cig?"
"Jas"

Jas by Afrobear February 18, 2009