Hero for a Day (1952)

Little Herky Mouse is jealous because his girlfriend Little Susie Mouse is smitten with Mighty Mouse Herky goes into a store that sells MightyMouse dolls and helps himself to a Mighty Mouse costume which he pads and fills out with some balloons The cats chase him and deflate the balloons but the real Mighty Mousethe big red cheese himselfshows up beats up the cats and stacks them in a neat pile one on top of the other Herky finds them that way when he comes to and Susie thinks he did it although Herky says he didnt think he had it in him Susie and the other little girl mice are fawning over Herky as Mighty Mouse gives a big wink and flies away