>>5765571Did it to myself, unfortunately.
Raised the driver a bit too high while trying to punch through a pine root and caught the tip on one of those nubs.
Bent the tip of the driver over and slammed it straight into the top of my skull with everything i had.
Vision went white, closest i've ever been to getting knocked out. Had a few issues since then.
Guy standing about 25 feet away said it sounded like a ripe watermelon busting, and he thought i'd killed myself.