My favorite: As dumb as a box of hair.
One more:All of his lights are on but nobody's home.
Here are a few possibilities:His elevator doesn't go all the way to the top.A few straws shy of a bale.His porch light has been flickering for years.Up the down escalator.
not the sharpest tool in the shed?
the wheel is turning, but the hamster's dead?
My favorite: As dumb as a box of hair.
One more:
All of his lights are on but nobody's home.
Here are a few possibilities:
His elevator doesn't go all the way to the top.
A few straws shy of a bale.
His porch light has been flickering for years.
Up the down escalator.
not the sharpest tool in the shed?
the wheel is turning, but the hamster's dead?