It was mid-week of one of the houseboat trips. Plenty of food left, but booze was getting low and we needed to restock.
We drifted up one of the arms of the lake to hit the store at the end. Joe, piloting the other houseboat pulls up to the dock and starts driving it back and forth, back and forth. We yell at him asking "Joe! What the hell are you doing?!"
Joe yells back "I'm parallel parking!"