To go down a hard ski slope without making any mistakes or slowing down. Often used to exaggerate a task performed easily.
Trent: Dude I went off the trail on that double black diamond, going over rocks and trees and shit, and guess what bro?
Tyler: what?
Trent: I mac and cheesed it.
Tyler: classic Trent
Tyler: what?
Trent: I mac and cheesed it.
Tyler: classic Trent
by getsweatym8 January 12, 2017
The time one spends in the air immediately after going off a killer jump, whilst skiing or snowboarding.
by getsweatym8 January 12, 2017