Big Mistake
Back in the day, my dad went to college, and his particular dormitory had around 15 floors. There was this dude, Chester, who lived in the center apartment on the 14th floor, facing the north side. This meant that Chester’s window was located directly above the entrance to the dormitory. This was not a good thing.
Chester, being the real idiot he was, would come home from school and wind down by throwing water balloons at the people walking into the building. Not even people he particularly hated or anything. Chester just did this to everyone for fun. Well one day, he hits my dad. Big mistake, as he would soon find out.
My dad and his friend bring a garbage can up 15 flights of stairs, head to the bathroom, and fill it with water. They then head up to his friend’s dorm, which happens to be right above Chester’s. A couple of girls walk up the steps to the door. Chester leans out of his window, prepared to throw the balloons, and is promptly hit with an entire garbage can of water.
Story credit: Reddit / tropiusking