File under: "ARE YOU OUT OF YOUR DAMN MIND!?"
NHL great Jeremy Roenick -- known for his crazy powerful slap shot -- decided to tee up a golf ball in his caddy's mouth Thursday ... and the video is INSANE!!!!
It all went down at the American Century Championship in Lake Tahoe -- a celeb packed golf tourney.
Roenick was getting some practice in on the 7th hole when someone came up with the idea to put a tee in his caddy's mouth to see if the former Flyers star could pull off John Daly's famous party trick!