not me, but my brother back in the early 70's, he was on one of those awesome center line 3 speed gear shift chopper bikes and was jumping over a home made ramp that would put him about 2 ft over the road. When he landed front wheel first, he slipped forward on the awesome banana seat, racked himself on the center shifter, and then lost control and then he hit the neighbors car ripping off the side mirror with his head.....there were 7 other kids in the hood watching this feat of awesomeness. We laughed, we cried, we regaled the story of the flying chopper for many days after to anyone that would listen to explain the 14 stitches, broken nose, and black eye. He was the hero we needed at that time.
And I might say, mom was pissed as she had to pay for that mirror and getting the door fixed. Never saw that chopper again.
This was the bike