Isaac was having an unbelievable amount of fun at this house, and in particular, with this window.
He'd look outside, crack up, then the park ranger would look around the corner at him, and Isaac would laugh his head off.
Then he'd run around and make me wait for him by the window. Then he'd come back in and make me run out to look inside at him. Then he'd go outside again, and when he came back in, I'd gone to hide in the kitchen, so he'd come yelling around the house looking for me, and I'd come up behind him & yell "boo!"
This went on for a good half hour or more. Thankfully the park ranger -- I feel bad that I didn't catch his name, he was a nice guy -- seemed to enjoy playing along, too.