Stupid Stunt Imbeds Golf Tee In His Tongue

How stupid is stupid? This pair must have discovered a way to take stupidity to new heights.

The stunt requires on person to lay on the ground with a golf tee in his mouth while the other lucky guy gets to hit a golf ball off the tee. Gee, what could possibly go wrong here?

Only one of the participants has a lasting momento of the stunt. Care to guess which one?