There's a saying about the difference between men and boys and while I don't think this is exactly what it's talking about who didn't dream of a rocket powered sled when they were a kid?
"A 62-year-old Michigan man was severely burned when a homemade rocket strapped on his back exploded while he slid down a snowy hill on a sled, authorities said this week.
The rocket stunt was the grand finale on Saturday during the man's annual sledding party at his Oakland County, Michigan, home, the sheriff's department said."