One kid falls out a window, and all of a sudden every hotel window in my country can open just enough to remind you of the fresh air you arent getting.

Pokemon cards. Watching grown a*s man-boys fight each other in a parking lot for a box of cards.

In middle school we had a planned field trip to the zoo to celebrate our last yr as middle schoolers. Well one idiot thought it would be a better idea to go out with a bang by starting a food fight in the cafeteria instead.

End of year school trip cancelled for everyone and everyone had to help clean the food fight mess. The cafeteria smelled terrible until the end of the school yr because janitors couldn’t clean food stuck in the high ceilings.

Told a new colleague getting a company credit card don’t [misuse] it, and you won’t lose it. Colleague goes on first work trip and tries to expense a $100 mani / pedi. Management hears about it, and it leads to several years of draconian receipt review (“how can you prove to us these three coffees were all for team members?”). Stupid all around.

Remote work. Only takes that one a****t to be running their kid to school, mowing the lawn, taking a nap, or "forgetting to charge their computer" in the middle of the work day to ruin it for everyone.

Years ago an apartment complex I lived in had a laundromat, and the machines were free to residents. Well, one resident made copies of her key and the place after that was always packed with people that didn't live at the complex. When the owner saw the utilities go up and figured out what was going on, he installed a system where everyone had to pay for laundry.

The communal office fridge at my last job. Someone decided to store their experimental kimchi there for three months.

Wearing shoes through airport security.

First thing that popped into my head was the creator of flappy bird having a breakdown and deleting the app.

The jerk at my work who expensed his family's dinner. Now they scrutinize every receipt, and they didn't lose their job. Thanks knucklehead.

I was attending a concert in high school. Sum 41 and Simple Plan. Someone threw a full water bottle on stage and hit the lead singer of Simple Plan in the face. He had to leave to go get stitches. Concert over. Simple Plan had played all of 2 and a half songs....

The kid who c*****d his head open at the swimming hole we hung out at most summer days. We told him not to dive from there, he did anyway, so they closed it off for everyone for ever!

My old apartment complex's gym used to be open 24/7 until this one woman decided to bring her entire CrossFit group at 3 AM. They dropped weights blasted music and damaged equipment.

"There are no rules if a stranger puts their hands on you"

Yell, scream bloody m****r, kick, bite, make the biggest scene you possibly can and run away as fast as you can.

Make sure your kids understand that this is the exception, the time they MUST draw as much attention as possible and do ANYTHING it takes to get away and get help.

Do not delay getting out of a burning building. The flames are not what will k**l you. The smoke will get very thick and toxic very quickly and you will not be able to see the way to get out.