Too many stupid or crazy or weird things seen over the decades I've been going to Disney World. But a few still stand out in my memory.
While riding on Horizons (yep...that was actually a ride in Epcot long ago), one of the animatronic family scenes had two 'non-animatronic' characters I had never seen before, sitting on the couch next to the wife on the hologram phone, smiling and waving at passing cars. As a security person entered the scene diorama, the two characters got up and ran off into the next diorama scene before getting cut off by another security person coming the other direction. Both were secured as the ride stopped and the house lights went on - so we got to watch them be escorted out through an emergency door, before the announcement that there was a temporary stop and the ride was resuming immediately. Lights went out, ride went on.
Waiting at the Boardwalk bus stop, the Magic Kingdom bus arrived, loaded several people needing assistance at the back door, then opened the front doors to load the rest of us. I boarded 4th or 5th, and while moving up the aisle, the two women in front of me let out yelps, and then cries of horror, and backed up into me. As I got a look in front of me, I could see there was a very large puddle of blood on the bus floor, growing rapidly. People started reversing off the bus and the driver jumped up to clear us to see what the commotion was. A lady in a cart had a gash on her lower leg bleeding quite extensively...the driver pulled out a first-aid kit, helped to wrap and cover it, a driver from an Epcot bus that had pulled up got off and jumped on the MK bus to help. The bus doors closed for a while, then an ambulance pulled up and the paramedics boarded. Finally, the lady was brought out on a stretcher to be brought to the ambulance, but had the wherewithal to tell everyone from the bus stop that she was fine, and it's happened before. She seemed in good spirits and moving well, so I assume everything was OK with her - never did find out how it happened! Funny thing is, another MK bus came while the ambulance was arriving, and only a few people got on - most people who were waiting for that first bus wanted to stick around to find out if the lady was OK...it took another 30 minutes after the whole thing was over for another MK bus to come.
At the entrance to MGM Studios (as it was called at the time), I saw an argument carrying on at one gate between cast members and a guest who was being told he could not enter. He was probably in his late 30s/early 40s, wearing a Snow White costume dress...with sneakers and a beard. He was arguing over being discriminated against, while the cast members calmly repeated that they weren't denying access because he was wearing a dress, but because he was dressed as a character which was not allowed in the parks. Note that this was in the early 90s.
At Epcot during the Food & Wine festivals in the early 2000s, I saw two people drunker than the normal crazy drunks one sees in the evenings, having the beginning of an argument. One tossed his plate of food into the other's face, which prompted an attempted lunge at the other - the very inebriated patron possibly was seeing double, as he lunged at the duplicate image and not the real person, missing and flailing into a garbage can. The food plate assailant was then going to follow up with a new counter attack, but tripped over his own foot and fell onto the first drunk and garbage can. Two other guests moved in to secure the two drunks - one of the two guests pulled out a walkie while both held the two drunks down, then security arrived and escorted the two guests out through the gate next to the UK pavilion. The two 'guests' who arrived on scene first were plain-clothes security, looking like tourists so they could closely monitor situations like that.
At Polynesian Resort, I watched a scene unfolding which I unfortunately see far too often - a young child being allowed to lunge and run after ducks and birds while the parents just laugh or ignore it. This one boy saw some ducks waddling the path and ran after them yelling. The ducks first ran, then flew, to get away from the little terror...until one duck made a flying u-turn and came straight at the kid...who suddenly saw the duck not as some silly stuffed little thing to chase, but a fighter jet trying to take him out - he turned and started to try to run from the duck, which was far faster than he was. The duck dropped on his head, flapping its wings furiously and clawing at his hair with its paddle feet, while also dropping a very liberal load of white liquid down the kid's head and back, before it flew down into the water next to its mate...and her 6 ducklings. The ducklings had been in the water a few feet away while the two parent ducks were up the boardwalk above them...apparently the usually-peaceful ducks felt that the threat wasn't just to them, but their ducklings too, and poppa duck had to defend his family. The terror child screamed and cried back to the parents who were suddenly aware of their little demonseed, with the mom pulling out a t-shrt to wipe the kid off. The dad? He was laughing at his child and filming his child with duck doo on his head with his cell phone.