look up any word, like swoll:
 
1.
Jc'in is the new way to say just chillin
hey, watcha doin?
ohh jc'in
by Lil Babi D =) April 15, 2010
 
2.
Just Chilling abbreviated to JC'in by removing the letters u,s,t,h,i,l,l and g.
hey whatcha doin later??? JC'in watching the news ROFL. U?
by RachelHughesy May 19, 2010
 
3.
To be a monster, not metaphorical, but truthfully. A Monster of all beings. JCin is and will always be the greatest at everything that monster does. Quote me.
JCin is doper than crack.
by Trip Tannen May 26, 2008
 
4.
Stands for Josh Coles 'ing
apparenlty means you're mackin with him?
but not really.
results from confusion of silly girls
what are you doin?
oh, hey. Im JC'in
by ...Church September 09, 2008