Staying at Wilderness State Park in northern MI. Went for an early morning beach walk after a night of rain showers, and got to watch the guy on the next site, who had failed to set his awning on an angle, dump 30 or so gallons of water on his head by dropping the awning arm while standing right next to the thing. I tried not to laugh, but it didn't work. He didn't see the humor, maybe because it was chilly and windy that morning... Probably the funniest thing I've seen in a campground.
Next best was watching a raccoon in broad daylight, waddle up to a tent while the occupants were away, look both ways, unzip the door flap with his clever little hands, and disappear inside. Always leave your zipper pulls at the top of the door....