I just thought of another one that happened to a buddy of mine.
It was April in the Wasatch. A very hard working buddy of mine at Alta (Not where the story took place BTW) who spent some time a "Hunta", was assigned a lunch time private. When the guy showed up, he was dressed in OLD ski pants taped up with MASKING tape, old rental skis, etc etc etc. My buddy takes one look and is like "What a GAPER!" Talking with the guy he was like, "Oh I skied a lot, I'm really good etc." My buddy wasn't really buying it but headed up the chair anyway. They get to the top and the guy jumps in a power wedge and heads off down the cat track. He starts to pick up speed, and more speed, and more speed. It's obvious at this point the guys is out of control. Arms start to flail, he's headed for the edge of the cat track toward a black bump run. Over the edge he goes. In mid-air, a ski comes off. My buddy said at this point he was thinking "This guy is dead and I'm in BIG trouble too." The guy lands and boom, boom, boom, boom, he rips the bumps on one ski! My buddy is peering over the edge with his mouth hanging open. From up on the ridge, he hears "APRIL FOOLS!!!" and sees about 1/2 the ski school hidden in the trees and laughing. Turns out the "gaper" was a high level racer type and the brother of somebody on the ski school. They had TOTALLY set him up. Moral of the story, looks can be deceiving.