General
the porch light's on but nobody's home
What does the porch light's on but nobody's home mean?
Describes someone who seems normal outwardly but is not too sharp.
"Nice fella, but the porch light's on and nobody's home."
Origin
Southern comedic idiom likening an empty-seeming mind to a lit but unoccupied house.
Frequently asked questions
What does "the porch light's on but nobody's home" mean?
It's a comedic way of saying someone looks normal but isn't very bright or is slow-witted.
Is it an insult?
Yes, it's a gentle insult about someone's intelligence, usually said humorously.
How do you use it?
Describe someone not too sharp, e.g. "Nice fella, but the porch light's on and nobody's home."
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