I put that on chawls! - You say the X men's leader's name like it's the last thing y

You say the X men's leader's name like it's the last thing you'll ever say. It's like a magical spell that makes your words true.

Chawls! I'll never forget this!

I put that on chawls! My words are gold!

Chawls! If I'm lying, I'll be dead by morning!