So I’m sitting up in the lifeguard stand bored as usual and I notice three boys, probably like 5, 8, and 9 years old in the 3-ft section of the pool. Two of them are each holding one of those dive stick things and the other has a plastic Spider-Man doll. The little one is screaming something and waving the stick around, and only when one of the other ones points Spider-Man and shouts “expelliarmus!” do I realize that the little one’s saying “reducto! Reducto! Reducto!” over and over again. I almost fell off the stand laughing. This dueling went on for like an hour or so, and they had an impressive vocabulary of spells and some pretty legit rules too, to the point where they threw their “wands” into the air if they were disarmed and flopped back in the water if they got stunned. These kids knew their stuff. Totally made my day