1
general::
Phrase(s): doesn’t have enough sense to bell a cat [and] doesn’t have enough sense to come in out of the rain
acts foolish. (Also with don’t. Don’t used with all persons is folksy.) • I should’ve known Mary would mess things up completely. She doesn’t have enough sense to bell a cat. • Look after Joe and make sure he doesn’t get into trouble. You know he doesn’t have enough sense to bell a cat. • I ain’t surprised that Jim spends a hundred dollars a week on the lottery. Everyone knows he don’t have enough sense to come in out of the rain.
McGrawhill's American Idioms And Phrasal Verbs