Some people say that Corn Snakes won't chill and sit still. But it really depends on where you are and what you're doing.
I could take my Red Tailed Boa and wrap her around my neck and then drive for 6 hours and she'd never move. I seriously doubt I could ever do that with a Corn Snake though.
They generally like to explore and they are very curious. I have had periods of time where Rufus (my corn snake) sits quietly in my hand or wrapped around my arm while I sit at the computer and check my emails. And by the same token, there have been days where he would not hold still and just wants to get into everything.
So all I will say in regard to a "Chilled Out Corn Snake" is enjoy it when you have it lol..... and never take your eyes off him/her when handling.