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.
Not the coldest drink in the refrigerator.
Dumber than a box of hair.
A few peas short of a casserole.
Doesn’t have all of 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 combination plates.
A few feathers short of a whole duck.
All foam, no beer.
The cheese slid off his cracker.
Body by Fisher, brains by Mattel.
Warning: Objects in mirror are dumber than they appear.
Couldn’t pour warm 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.
Forgot to pay his brain bill.
Her sewing machine’s out of thread.
His antenna doesn’t pick up all the channels.
His belt doesn’t go through all the loops.
If he had another brain, it would be lonely.
Missing a few buttons on his remote control.
Slinky’s kinked.
Surfing in Nebraska.
Too much yardage between the goal posts.
In the pinball game of life, his flippers were a little further apart than most.
Not the sharpest knife in the drawer.
No grain in the silo.
Proof the evolution CAN go in reverse.
Receiver off the hook.
Several nuts short of a full pound.
Skylight leaks a little.
Got into the gene pool while the lifeguard wasn’t watching.
A room-temperature I.Q.
A photographic memory, but the lens cover is glued on.
A prime candidate for natural deselection.
Bright as Alaska in December.
Got a full 6-pack, but lacks the plastic thingy to hold them together.
One celled organisms out score him in I.Q. tests.
Donated is body to science before he was finished with it.
During evolution, his ancestors were in the control group.
Fell out of the family tree.
Gates are down, the lights are flashing, but the train isn’t coming.
He’s so dense, light bends around him.
If brains were taxed, he’d get a rebate.
If he were any more stupid, he’d have to be water twice a week.
If you give him a penny for his thoughts, you get change back.
If you stand close enough to him, you can hear the ocean.
One neuron short of a synapse.
Some people drink from the fountain of knowledge, but he just gargled.
As a baby, was left on the Tilt-A-Whirl a bit too long…