Twin Falls, Idaho (KMVT-TV) On September 9th, 1974,the day after Evel Knievel's unsuccessful Snake River Canyon jump, 13 year old Jimmy Munn Jr. outdid Knievel by jumping his bicycle over three aluminum trash cans and landing safely in the alley behind his home on Taylor Street in Twin Falls.

Munn, now the former Chief of Police for the City of Twin Falls, says, "We would build these rickety ramps out of plywood and 2x4s, whatever we could get our hands on. And you get going as fast as you could down Heyburn Avenue, and jump these trash cans along the roadway."

For his next performance, Munn decided to raise the stakes. About two weeks later, he rode his bicycle across a small parking lot north of Addison Avenue, down the concrete drainage ditch, up a ramp that was way too steep, and across the Perrine Coulee.

Munn says, "I landed on the other side. I didn't really have a contingency for the landing area. I landed on the other side and broke my left femur big time, resulting in me lounging in a body cast for two months over here at this house behind us on Taylor Street."

The rest of the story? Munn's dad was Twin Falls County Sheriff's Deputy Jim Munn Sr. Munn says while he was making the Perrine Coulee jump that Saturday afternoon, his dad was over in Kimberly trying to encourage some teenagers to not jump their bicycles over hay bales.

Munn says, "I remember at the time the total hospital bill for my leg was $1500, which was an absolute fortune for a sheriff's deputy back in the 70s and I understood then the significance of money, and not making bad decisions. So it was an all around learning experience, I'd never wish it on a child to have to go through."

In other words, don't try this at home, kids.

Sept. 7, 2012.