Used when your friends are getting out of control or high and you just want them to calm themselves. You can also accompany it with "no one cares" when someone's gushing on about something you hate
Random Belieber: OMG DID YOU HEAR THAT JUSTIN BIEBER JUST LOST ONE HAIR??!?
Random Person: Chill the fuck down. No one cares.
1.)Something you tell someone who is tring too hard to be "hip, and with it" in a materialistic way.
2.) a way to tell someone that they are freaking out unnecisarily; kind of like chill out, but more cool
3.) a dance and song from the movie Labyrinth
1.) Dude, chilly down, no one gives a rat's ass that you have a hummer.
2.)Hey, you're being a douche bag, just chilly down.
3.)"Strut your nasty stuff, wiggle in the middle, get your town talkin'. Bad Gang. Chilly down with the wild gang."