Dennis the Menace

Mike J.: And as we see here, the whole town is searching for Dennis, including Joey.

Joey: [looking down a manhole] Dennis!

Mike J.: Hang on, come on, let's think about this; Dennis and Joey are best friends, and surely best friends know a thing or two about each other. So, why the hell hasn't Joey - or Margaret for that matter - suggested that he might have gone to the treehouse? The very same treehouse they have been working on throughout the movie! Look, we know that the bridge where Dennis and Sam currently are is on the way to the treehouse; we saw that earlier. The fact that neither Joey nor Margaret have suggested to look here baffles me! If I were Dennis when this whole thing blows over, I would have a word or two with my "best friend".