The Munsters (1964)

S1E3 A Walk on the Mild Side

Herman struggles with sleeplessness and finds that a stroll in the park at night is the only remedy. However, reports of a 'monster' lurking in the park make Lily anxious, and she urges Herman to stay indoors for his safety. Unbeknownst to her, the creature causing the commotion is none other than Herman himself! As he ventures out under the moonlight, the confusion and hilarity unfold, with Lily oblivious to the true identity of the supposed monster prowling through the shadows.