The premise is preposterous. Jerry Lewis hides out from a dangerous criminal by posing as a 12 year-old child... and everyone believes it. It's definitely a strain on one's willful suspension of disbelief, but then again, this is a world where a number of the students at an all-girls school appear to be in their 20's and 30's. Even if you overlook the ridiculous implausibility of the story, there's not much here. Most of it isn't very amusing, although the madcap waterski ending is kinda fun.