Okay I've got one but it's a bit more positive. And funny for me.
Okay, I used to go to Cubs, which you may or may not know is basically the younger kids version of Scouts. It was weird, looking back on it, but that's not the point. Anyway, there was this one kid there who taunted me to know end and, being considerably lighter and faster than I was, I couldn't do more than try and get the councilors involved (didn't work, surprise surprise). Anyway, my grandmother was the one taking me this one instance, since my parents were busy that day, and she saw this kid bothering me. Now, you have to understand, my grandmother is normally a fairly sober and nice person. She makes excellent soup, lives in a nice condo with my grandfather, had created more needlework than is likely required to coat Canada in socks and she very rarely gets upset (and when she does her usual reaction is cutting sarcasm). Neither had she (or has she, come to think of it) every exhibited the usual "old people are crazy" things. But in this case, she made an exception. She drives this kid around in front of her with her cane (which was odd, since I'd never seen her with a cane before that point and she hasn't used it in my sight ever since) up a tree, where he was forced to remain for a good half hour. I laughed SO hard...