Ludicrously hilarious; a slapstick comedy that at first doesn't seem that funny, then progressively layers itself until you can't stop laughing.
The dialogue is awkward and some of the situations are absurd; this was a play before it became a movie, so if you treat it like a play, then it automatically becomes funnier.
A strong lead from Michael Caine and good supporting stage actors and actresses (most notably John Ritter).
The lowest form of humor in the evolutionary chain but still funny. 75/100