This thread is great! I guess since longshot is divulging more than one, I'll share some more too.
A couple are only disasters because I got caught, and maybe a bit stupid. They are pretty darn funny now.
I've shared this one before but it's one of my all time favorite memories. I was little, 7-8ish? And we were at a horse show. My grandpa has always dipped skoal. My sister and I thought it was disgusting. We emptied out his can and filled it back up with dried up, crumbly horse manure. I can see the look on grandpa's face to this day when he got that to his lip. We laughed so hard as we ran away...but we failed to consider that we had to ride home with him.
Mom picked up a small pony at an auction for us once. Got him home and he was an absolute butt. He was small enough though that us girls thought it was kind of fun. He earned the name AJ (Air Jordan) he was real good at walking on his hind legs. We'd go back behind the barn where we thought no one would see us. One would get on bareback, the other would smack him on the butt as hard as we could. Winner was whoever went the farthest on 2 legs. Neither of us truly won because we got caught.
I am also guilty of killing one of my cabbage patch dolls. I was again, not very old, thought it a good plan to "break" one of the yearlings by tying a doll on her with twine. Poor Betsy Ann got disemboweled when lazy yearling scraped her down the entire side of the barn.