A few clowns short of a circus.
A few fries short of a Happy Meal.
An experiment in Artificial Stupidity.
A few beers short of a six-pack.
Dumber than a box of hair.
A few peas short of a casserole.
Doesn't have all his cornflakes in one box.
The wheel's spinning, but the hamster's dead.
One Fruit Loop shy of a full bowl.
One taco short of a combo plate.
A few feathers short of a whole duck.
All foam, no beer.
The cheese slid off her cracker.
Couldn't pour water out of a boot with instructions on the heel.
He fell out of the stupid tree and hit every branch on the way down.
An intellect rivaled only by garden tools.
As smart as bait.
Chimney's clogged.
Doesn't have all his dogs on one leash.
Doesn't know much but leads the league in nostril hair.
Elevator doesn't go all the way to the top floor.
His antenna doesn't pick up all the channels.
His belt doesn't go through all the loops.
Missing a few buttons on his remote control.
No grain in the silo.
Proof that evolution CAN go in reverse.
Receiver is off the hook.
Several nuts short of a full pouch.
Skylight leaks a little.
Slinky's kinked.
Surfing in Nebraska.
Too much yardage between the goal posts.
Not the sharpest knife in the drawer.
The lights are on, but nobody's home.
24 cents short of a quarter.
