three walls shy of a full house

Not very bright and lacking in any common sense whatsoever

Well, bless your pea picking little heart! You are about three walls shy of a full house, ain’t you? That’s what you get for sticking your finger in an electric socket!

Three Walled

Signifies a state of being where only three walls surround you, inviting others to peek into your life and share in your experiences. It represents a more open and interconnected way of living, where transparency and connection with others take precedence over complete privacy and solitude.

John has a "Three Walled" life