from any serious head injury.IQ lower than a snake's belly in a wagon-rut.It's hard to believe he beat 100,000 other sperm.Just another flash in the bedpan.Knitting with only one needle.Leaky sunroof.Left the store without all of his groceries.Living proof that nature does not abhor a vacuum.Long on dry wall, short on studs.Looking for a nickel in the corner of a circular room.Lugnuts rattling in the hubcaps.Missing a few buttons on his remote control.Mooring lines don't reach the dock.Needs another brain to make half-wit.Needs his sleeves lengthened by a couple of feet so they can be tied in the back.Next-day delivery in a nanosecond world.No coins in the old fountain.No filter in the coffeemaker.No grain in the silo.No hay in the loft.Not Intel Inside.Not running on full thrusters.Not shooting pool on a level table.Not shooting pool on a level table.Not the brightest bulb on the Christmas tree.Not the sharpest knife in the drawer.Oil doesn't reach his dipstick.On permanent leave of absence from his senses.One board short of a porch.One boot stuck in the sand.One rail short of a bank shot.One drop short of an empty bladder.One Froot Loop shy of a full bowl.One pearl short of a necklace.One prayer short of absolution.One sentence short of a paragraph.One ship short of a full fleet.One step short of the attic.Out there where the buses don't run.People around her are at risk of second hand idiocy.Playing baseball with a rubber bat.Plays solitaire for cash.Plenty of salt in the shaker, but no holes in the cap.Put a lens in each ear and you've got a telescope.Receiver is off the hook.Room for rent, unfurnished.Running U.S. appliances on British current.Several nuts over fruitcake minimum.She only packed half a sandwich.Single-sided, low density.Sitting in the right pew, but in the wrong church.Skylight leaks a little.Slinky's kinked.Smoke doesn't make it to the top of his chimney.So dumb, blondes tell jokes about him.So stupid, mind readers charge her half price.Some bugs in his software.Some drink from the fountain of knowledge, but he just gargled.Somebody lend her a quarter to buy a clue.Someone blew out his pilot light.Sort of like an inverse Einstein.Suffers from Clue Deficit Disorder.Surfing in Nebraska.Takes her two hours to watch 60 Minutes.Teflon brain--nothing sticks.The cheese slid off his cracker.The spit valve's fallen off his trumpet.The wheel's spinning but the hamster's dead.Three chickens short of a henhouse.Too many birds on her antenna.Two sheep short of a sweater.Too much yardage between the goal posts.Took the little bus to school.Two chapters short of a novel.Two degrees off square.Two saucers short of a tea-service.Two sheep short of a sweater.Useful as a chocolate teapot.Uses his head to keep the rain out of his neck.Vacancy on the top floor.Views mold as a higher life form.Warranty expired.Whole lotta choppin', but no chips a flyin'.Wise as the world is flat.Zero K memory.Kinder, Gentler Ways to Say Someone is StupidThe wheel's spinning, but the hamster's dead.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