(mainly because the vibrations from his knocking is causing some empty ones to rattle noisily), and then slam the door in his face which soon leads to a battle between Porky and his cats for possession of the house.

When Sylvester finds out that they have been tricked, he and the others plot revenge, which is exacted by having the cats create a War of the Worlds-esque emergency over the radio about invading aliens, disguising themselves as the Martians and driving Porky into a panic over "Men from Mars!"

Comics historian Craig Yoe writes, "In this uproariously funny film written by director Robert Clampett himself, everything and everyone is made of rubber.

"[3] "Milkman, Keep Those Bottles Quiet" was a World War II hit song by Ella Mae Morse, and was sung by Nancy Walker in the film Broadway Rhythm.

The cats charging up the stairs at Porky assume the appearances of Theodore Roosevelt and his Rough Riders cavalry (possibly in reference to the film Arsenic and Old Lace).