The first film Jerry Lewis made as a producer, bears in certain sequences his unmistakeably delirious stamp, but the squaring of his genius, at its best in the picaresque non-consequential modularity of the later films, into the round of a conventional narrative structure (a feat he would achieve later, for instance in Nutty Professor) here hurts rather than helps
Jerry is barely baby faced enough to pull this role off, but the beautiful black & white cinematography by Haskell Boggs helps. It is sappy, but a movie with sappy heart is better than a sloppy heart. Some great characters also. The mad professor upstairs Sidney assists may have contributed to a famous nutty professor role Lewis would portray in 1963.