[Richie planned this so of course he'll be there, watching and waiting. Some might think this is really immature for him, but he's hot, sweaty and maybe hasn't really slept much in the last few days. Strange ideas can get into a person's head when they're running on caffeine drinks, adrenaline, and a need to do something about the heat.
If you walk by the bush he is hiding behind he might just throw a water balloon at the back of your head. He did warn you about coming to the park today! Not that he'll deny he was the one that did it.]