"I'm afraid it wouldn't be that much fun for me if I was in there with you. My swimming skills are minimal at best." After all, this place was supposed to be fun. There's nothing fun about doing something that you're awful at. He'd spend most of his time flailing around and attempting to swim over actually having fun. No, at least with this, he's content just to watch—he'll find something fun to do later that's more his speed.

"Besides, sometimes it's just as much fun to watch!"