Yawn. Poorly Filmed Snooze Fest.

if their story seems completely bonkers, almost like a feverish work of fiction, you ain't heard nothing yet.

Great story, amazing characters, superb action, enthralling cinematography. Yes, this is something I am glad I spent money on.

The film never slows down or bores, plunging from one harrowing sequence to the next.

This slow moving train wreck was produced and directed by the star, Jerry Lewis. No one else would touch it. Lewis plays an accountancy clerk who catches a sea diver when fishing on the coast. The diver is a diamond thief and gives Lewis a map. The diver's confederates, who he has cheated, plan to assassinate him and get the map. Then follows a dull series of slow pratfalls. Lewis stays at the Hilton while searching for the diamonds. How he can afford to is not shown (he's only an accountancy clerk remember).One of the confederates is a Japanese who runs a "racket" selling plastic inserts in oysters as pearls – although in fact this is how manufactured pearls are made. Lewis never finds the diamonds. The strong violence make it unsuitable for the most undemanding of children. Product placement – Pepsi Cola.

Having just watched this on YouTube, there were plenty of good and bad things about this movie. The Good: supporting performances of Del Moore as hotel clerk Mr. Hodges who gets the brunt of Jerry Lewis' accidents, Charlie Callas as one of the gangster's hoods Rex who does his nervous shtick when he finds Jerry's doppelanger hood is still "alive", and especially John Nolan who plays "FBI Agent" Webster-you'll figure out why I put quotes around his title. There's also funny scenes of Jerry in a phone booth trying to get to the police as well as of police officers arguing what a certain code means as Jerry is stopped while speeding. And I did like Jerry both when he's "normal" and in disguise. The Bad: The Asian stereotypes. It's especially embarrassing to see "Star Trek" player George Takei playing this kind of role as a henchman who suffers a tragic fate. Also, I didn't like the dialogue exchange between Lewis and leading lady Susan Bay about his "problem". Such double entendre has no place in a family comedy like this (I know, there's some violence but somehow that's more acceptable here). And the chase climax was pretty lame. Overall, this was pretty enjoyable despite some of the more objectionable material I cited. So on that note, I did like The Big Mouth. P.S. I didn't recognize Rob Reiner or Charo in their cameos so either I missed them or IMDb got it wrong. (I'm not really accusing this site, just wondering where either Reiner or Charo could have been in the movie) Oh, and one more thing: supporting player Buddy Lester is from my birthtown of Chicago, Ill.

The Big Mouth has always been one of my favorite Jerry Lewis movies. Jerry surrounds himself with the cream of the crop of character actors in this one. The manner in which each actor goes crazy after seeing Jerry, (thinking he's dead), makes this movie, truly, one of Jerry's most bizarre and funny! The Kabuki scene, with Jerry in white make-up and "frightwig" is priceless! The original score by Harry Betts is first class. This film is classic "1967", (referring to films released that year like "Casino Royale", "Danger:Diabolik",etc.). I would love to see a special edition DVD release of this, with commentary from Jerry & Charlie Callas. In my dreams!

Jerry Lewis remains as one of the best comedians/actors of Hollywood. As usual, Lewis is a goofy man who decides to take a vacation to fish. But He finds a "copy" of himself who is a criminal who run away from his partners with Jewels. The rest, you can imagine....