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2.
very cool, the best.
Your mom is mad chill
by qwertyuiopasdfghjklzxcvbnm December 11, 2003
 
1.
Phrase meaning very cool, or showing strong approval for something.
That kid is Mad Chill.

This is some Mad Chill pizza.

I love that place...its Mad Chill.

by Steve August 01, 2003
 
3.
very good
Person 1: I had some Mad Chill cheese fries today.
Person 2: Nice
by The Urban Dictionary August 01, 2003
 
4.
A very annoying and stupid phrase used to describe someone or something very cool.
- "Dude, this kid I know is mad chill..."

- "What the hell is with all this 'mad chill' crap that everyone keeps repeating?"

- "Well, uh, it's just a new thing everyone is saying..."

- "Can you think for yourself for once and not use such a stupid phrase and stick to something that isn't so retarded?"

- "Dude, you're being an idiot..."

- "'Dude', please don't call me 'dude'... and I'm not the one whose saying 'mad chill'"

- "..."

- "That's what I thought..."
by AnPiarsach June 12, 2009
 
5.
Being in an environment where there is a chilly anger.
Whoa, There was a mad chill going on in my youse tonight.
by Cy Hand December 20, 2003