Here's a "stabby" one for you. Doesn't need to be anonymous cos I (1) think it's funny and (2) don't care who knows. I got a dartboard and darts (real ones) for my 5th birthday, which I opened with my best mate at the time, from next-door-but-one.
As we were playing, he went to add up the scores and retrieve the darts after his turn. For some reason though, this particular time he just "hugged" the board, cupping his face in his hands while literally lying over the entire board.
He completely and repeatedly refused to move away or answer me, so I started getting annoyed. He didn't budge so I told him to shift unless he fancied a dart in the back of the head. Unfortunately for him, he really didn't believe me...
I launched the dart at him as hard as I could (only five remember!) and it buried itself firmly in the back of his skull, right up to the nub. He screamed like a girl, danced about, then passed out on the floor. Oops.
One trip to A&E, some scans and a painful extraction later, he was back home and on a week's bed rest while his parents watched for signs of impending brain swelling or something. He never did talk to me after that, but yay for the era where kids could be kids and we didn't have to go about our lives wrapped in allergen-free cotton and wool free cotton wool lest we injure ourselves or incur a compo claim
Those were the days.