One of my stupider moments. Had a dirtbike in college. They were building stuff by our apartments and right out the back in a field they were dumping a HUGE pile of dirt. The pile probably got to 25 feet at the crest, and the dirt was pretty soft.
Of course, all of us with dirt bikes tried to ride up and over the crest. After a while the dirt packed down and trails were made... I was the first guy to make it up and over.
Pile was around for weeks.
OK, one Friday afternoon a whiskey front blew through and my roomate wanted to learn to ride in the dirt. So we went out and I showed him the ropes. He did terrible. I took the bike to show him how.
Got a good run at the mound and really went hauling up the side; made the crest with a good bunch of speed and jumped it.... only to find that while we had been away at school they had bulldozed most of the back side of the hill away.
I'm standing on the pegs, looking down past the footpegs and there's......... nothing but air for about 25-30 feet.
Right away the brain flashed an important message: "This is going to hurt".
The brain was wrong for once; I think the whiskey protected me. I managed to keep the bike upright and landed on the back wheel. Flat rear tire, busted both rear shocks, bent the handle bars a bit and some other minor damage. I got tossed when the front wheel came down in to the newly 'dozed ground.
I walked away with some cuts and bruises. I rode around stuff before I planned to jump after that.