JerryLewis plays a timid, nearsighted chemistry teacher who discovers a magical potion that can transform him into a suave and handsome Romeo. The Jekyll and Hyde game works well enough until the concoction starts to wear off at the most embarrassing times, and the professor begins to suffer hilarious symptoms of his personality split.
Just being scruffy, goofy, shy and cross-eyed is amusing only for 5 seconds. After 5 minutes it becomes tiring. I could only stand it for 10 minutes. This might have been funny 52 years ago but even then only for some. Directing and playing the main character (always in shot) must be great for an ego-maniac, but he clearly wasn't that critical of himself.