look up any word, like fleek:
 
1.
super cool(awesome)
Dude, that guys such a good skater, he's so pro chillin.
by Sezicky January 03, 2011
 
2.
chillin hard ;possibly drunk like a pro
ned:what did yall all do this weekend

bill: not much just prochillin with the boys
by grantness February 27, 2010