Playing a big gig one time and my kit was on a very small riser. Right at the peak of the grand finale song my drum stool leg slipped off the riser. I fell off the riser, the stage and back behind these big black curtains. Total fall and distance from kit: 15-20 feet. Fortunately I wasn’t injured.
The other guys in the band said “all the sudden the drums stopped, we looked back and you were gone!” They wondered if I had been abducted by aliens.