McChillin'
chilling to an extreme degree
Friend: Yo you took 9 shots you good?
Other Friend: Yeah don't worry I'm mcchillin'
Other Friend: Yeah don't worry I'm mcchillin'
mcchillin
Mcchillin is when a bunch of teenagers usually loiter or hang out at a McDonald's usually for long periods of time or on a daily basis
Bryan: Hey, what are you doing after school?
Jake: I'm Mcchillin with Stephanie and Mike.
Jake: I'm Mcchillin with Stephanie and Mike.