Scariest/funniest thing I ever saw: Decades ago our club leased a huge tract to hunt and we had access during the offseason. About 25 or so would show up on weekends to see who could get the dirtiest. Most of the bikes were 175s, 250s, an occasional 350.
One Sunday one guy shows up with the new Yahama TT 500. We're blasting down a wide, fairly smooth grassy trail and he just pulled away from everyone. Suddenly, I saw him stop moving as the bike continued forward. He hung in the air for a second before dropping to the ground. There was a cable stretched across the trail.
No way an ambulance was getting to us, but one of the guys managed to get his Jeep to the location. He broke several ribs andhis left humerus. He later said he had just slacked off and sat up in the saddle when he hit the cable; never saw it. That probably saved his life. He sold the bike.