My family had Lawn Darts and we used them every summer.
One day, back in the early '80's, we were playing and my little brother wandered directly into the line of fire right after my uncle had released his dart. It planted itself right in his hand, entered in the space between thumb and forefinger and came out his palm. Point was sticking out about an inch. He started running around in circles, yelling and holding his hand out in front of him, the dart waggling back and forth. Finally, my dad was able to get him to stop so he could yank the thing out of his hand and take him to the emergency room. Kind of ruined the day and we never used the Lawn Darts again. I think my folks threw them out.
Damn, I wish I still had some Lawn Darts....they was fun.