look up any word, like fleek:
 
1.
What you do with your boy.
"Yo I'm shillin, get your ass over here, lets kick it."
by Leftallalone July 03, 2009
 
2.
What a highly intoxicated individual says when you ask what they're up to.
Moderately Sober Person - "Ay mane, whatchu up to?"

Crunk-Ass Person - "Shillin' mannnn, prolly gonna go git some more berrr ina minute...."
by Dahmuhfukah January 09, 2009
 
3.
another word used for "chillin"
Person 1: "Hey whats up"?

Person 2: "Not much just shillin"
by j-ten January 01, 2009