Ways to say Someone is Dumb

A few fries short of a Happy Meal.

An experiment in Artificial Stupidity.

Doesn't have all her cornflakes in one box.

The wheel's spinning, but the hamster's dead.

A few feathers short of a whole duck.

Body by Fisher, brains by Mattel.

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.

Doesn't have all his dogs on one leash.

Elevator doesn't go all the way to the top floor.

Forgot to pay her 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 she had another brain, it would be lonely.

Missing a few buttons on his remote control.

Proof that evolution CAN go in reverse.

Not the sharpest knife in the drawer.

The lights are on, but nobody's home.

Feel free to post any more that you've heard

Not the brightest crayon in the box

Not the sharpest tool in the shed

One brick shy of a full load

One sandwich short of a picnic

If stupid were a tree you would be a forest

(I know a lot more but I can't think of them at the moment...)

A few sandwiches short of a picnic

i heard a few instead of one sandwich

OR...you can just say " youre stupid!"

you don`t have both oars in the water

If stupidity was golden, you would be Fort Knox

um, i heard (off Ace Ventura)

The engine's running but, there's nobody behind the wheel.

You're so stupid you thought the past tense of "stand" was "standed".

Sorry, I couldn't resist. I don't think your stupid, Kayla, just had to say that.