I once hit a hard worm burner with driver. I looked up to watch the ball but it was nowhere in sight. I turned back to my friend and asked if he saw it. He looks bewildered and says No idea where that went. As we are looking at each other shrugging our shoulders wondering where the hell my ball went, behind him I see a ball fall straight down from the sky and nearly embed itself on the green of the previous hole with an ugly thud. Turns out I had worm burned it straight into a tee marker about five yards ahead, one of those round ones, and launched it a mile straight up into the air. My friend and I practically had a whole conversation before the ball hit the earth again. It took us a while to figure out what had happened. He was in hysterics, I was just glad the ball hadn't ricocheted back into us.
In a related story: I was at a course that used what looked like painted shotputs for ball markers. Sat AM tee off, a group of teenagers are teeing off from the blue tees. There are many people gathered around, plus there is a putting green behind the tee box...separated by a cement cart path. The first 3 kids tee of without difficulty, but the fourth kid is feeling the pressure. At address, he paused, looked up, and saw about 20 - 30 people waiting and watching. He then hits a wormburner that nails the white tees in front of him. The ball comes straight back at him about knee high.
He must have been an athlete as he jumps straight up and lets the ball go by and head directly to a crowded practice green. Somebody yelled "fore" but it was too late. The ball skipped hard of cart path and hit an older man in the back of the calf........dropping him to his knees.
Everybody on the green turned around and looked at the tee box......and the kid acted like nothing even happened. He just put his driver in his bag and started walking down the fairway like he had nothing to do with it.