This contains a spoiler. Stop reading if you don't want to know the only "funny" thing about this flick.
Man, was this a funny movie. When I was 9. Well, not even then, really. The most memorable thing from the whole picture was a !SPOILER! small dog involved in a running gag. The little cur would lower his head and sink his front, then raise his butt in the air. The punchline was delivered via a butt busting fart and clear the area of any hominids by virtue of its nose hair stinging stench.
As originality goes, there are some things that rate higher. Like K-Fed. Well, on second thought, not him.
The acting was very not memorable. The performances did nothing to engender the glowing reminiscence of movies watched when I was a child. They were so unremarkable, as a matter of fact, that I was immediately critical as I walked from the theater. And so, this experience forever changed me. The lesson was: not every pic is a good one.
I suppose that this would help kids who are in the "farts are funny" developmental stage pass a rainy afternoon. Don't expect, as an adult, to be even mildly entertained by this. Unless, of course, you take pride in the ability to belch the alphabet.