*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 six-pack
*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 full bowl
*One taco short of a combination plate
*A few feathers short of a whole duck
*All foam, no beer
*Body by Fisher, brains by Mattel
*Has an I.Q. of 2, but it takes 3 to grunt
*Warning: Objects in mirror are dumber than they appear
*Couldn't pour water out of a boot with instructions on the heel
*Too much yardage between the goalposts
*An intellect rivalled only by garden tools
*As smart as bait
*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 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
*No grain in the silo
*Proof that evolution can go in reverse
*Receiver is off the hook
*Several nuts short of a full pouch
*He fell out of the stupid tree and hit every branch on the way down