Jerry Lewis directed, co-wrote, and stars in this half-wit gangster comedy about a bank auditor who takes a fishing holiday and gets mixed up with jewel thieves who are after buried diamonds; turns out he's also the dead ringer for an allegedly-deceased crime syndicate boss...though that's not the reason Jerry spends half the movie in disguise as his bespectacled "Nutty Professor" character. Sloppy, stupid, braying farce, the kind of star-vehicle which hopes to ring laughs out of every silly gesture or cross-eyed reaction. Lewis plays the kind of fisherman who can't even push a sailboat away from the dock without falling into the water. Frank DeVol as Bogart (our deadpan narrator) is an unusual touch, and Colonel Sanders has a funny (if pointless) cameo. Otherwise, this "Big Mouth" is just an empty hole. * from ****