Insults 4He's a few clowns short of a circus.
She's a few fries short of a Happy Meal.
She's a few Cokes short of a six-pack.
He's a few peas short of a casserole.
The wheel's spinning, but his hamster's dead.
She's one taco short of a combination plate.
She's a few feathers short of a whole duck.
He's all foam, no beer.
The cheese slid off his 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.
He has an intellect rivaled only by garden tools.
She's as smart as bait.
He doesn't have all his dogs on one leash.
He forgot to pay his brain bill.
Her sewing machine's out of thread.
His belt doesn't go through all the loops.
Proof that evolution CAN go in reverse.
He's a prime candidate for natural deselection.
In the pinball game of life, his flippers were a little further apart than most.
I would not allow this employee to breed.
This employee is really not so much of a has-been, but more of a definite won't be.
Works well when under constant supervision and cornered like a rat in a trap.
When she opens her mouth, it seems that this is only to change whichever foot was previously in there.
He would be out of his depth in a parking lot puddle.