I've got one, but with a big disclaimer:
I WAS YOUNG, IN THE WRONG, AND WE LEARNED OUR LESSON!
Decades ago, my uncle and I (we are 1 year apart, and grew up more like brothers) had been taken to Disney World by my Grandmother for our regular summer trip...I think we were 6 or 7 years old, and starting to go through early rebellious periods in our lives as kids in the 70s were wont to do. This was still in the days of A-E tickets, so going on the rides was limited as the E, then the D tickets were all used up. My grandmother wasn't wealthy, so we'd each get a single ticket book to use, and burn through the high end tickets first, leaving us with the C, B and A tickets.
Fortunately, we still had a favorite C ticket ride - Mr. Toad's Wild Ride. Being mischievous, we decided while standing on line walking across a veritable carpet of cigarette butts to collect some of them, and see if we could insert them into the mouths of the characters while passing by on the ride. Stupid kid mischievousness, as we were allowed on the ride while my grandmother waited outside.
Well we started the ride, and were having a hard time getting any characters within reach - so it was turning out to be a bust. But my uncle thought he saw the perfect opportunity coming up on his side of the car. We were just entering the room where you pass the fox cop at the railroad gate before entering the railroad track tunnel. Those that know the ride may remember that the ride car 'busts through' the gate, which swings aside with the fox cop just as your car rounds the bend. My uncle knew that would put the fox cop within easy arms reach.
Excited, he leaned forward against the safety bar, reached out as our car approached, and just got a hold of the crossing gate with his left hand to use as leverage to reach out with his right and try to get the cigarette in the fox's mouth. That's when our car turned right...and the gate would have swung out of the way...had my uncle not been gripping it for leverage. I heard a crack, then we swung into the train tunnel, and I noticed that the crossing gate appeared to still be in front of our car. When I looked over just before we entered the dark tunnel with the train light approaching, I saw that my uncle still had a kung-fu grip on the crossing gate, a deer-in-the-headlights look on his face, and was frozen with fear. My face took on the same deer-in-the-headlights look as I stared at him in fear - uh oh...we're in trouble!
Our car left the dark tunnel, and the situation felt much more dire. I realized then that he needed to LET GO OF THE GATE! We can't exit the last room 'Hell' still holding the broken gate, and come out of the exit doors with evidence in our hands and all to see - so I started yelling at him to drop it - it took a few seconds before he came out of his fear-induced stupor, and did finally drop the gate just as the devil was judging us (boy...there's irony, huh!), and a huge wave of relief swept over me as the doors swung wide and we returned to the sunlight and the crowds...
And my grandmother, and the ride operator, and the Disney security representative...all waiting at the unloading area. A huge wave of dread and doom swept over me before the wave of relief had even finished. Yep...we were in trouble.
In my grandmother's presence, we were given a very polite but stern lecture about ruining the Disney magic for others, acting irresponsibly, what angst we were causing our grandmother, the physical cost of our behavior, and so on. And believe me - it got through! Not like many of today's kids who have no respect for or fear for 'punishment'...in the 70s we definitely did. We also knew that Disney's kind but stern rebuke, no matter how embarassing and guilt-ridden, would be cotton candy compared to what we were going to get from grandma.
Needless to say, that was my last mischievousness at Walt Disney World...and it likely helped instill the strong feelings I have for the magic of Disney that has kept it such a special place for me. That lecture, and the guilt we felt for doing that, helped us see for the first time how really special the place was, and how disappointed we would be if someone else had done what we did and spoiled OUR magic!
But after the ride was over, she was ok and ready to do it again!
It was weird because they put all the lights on and you could see all the tracks. It was nice though because they sent 2 CM's to each car to stay with them until the ride resumed. We had fun talking to them and joking. 
) Anyways, she was the one one to go backwards down the slope, and that had her really upset. Then we hit the bottom and she was drenched. The funniest part was watching her husband trying not to laugh at her.
