Note: This probably isn't the funniest thing that has happened to me. Actually, its not even that funny.
I stayed with my family and two of my friends in a condo in Galveston this summer. One night, when my parents were out at dinner, we got the genius idea to drop soda cans off of our seventh-story condo balcony and onto the empty streets below. It was later at night, so there were no cars. We had dropped two soda cans and were about to drop a third when a man walked out from the first floor. We thought he was a manager, so we all left the balcony and started to think about going to pick up the cans. We decided that would be the best action to take, but the one thing we didn't factor into that plan was that my parents would be getting home soon. As they ran onto the streets, I saw a familiar-looking SUV coming down the road. My friends saw the car too, and held the soda cans behind their backs as my parents stopped to question why they were down there. "Going on a walk" was the best excuse they could come up with.