CANONICAL LIST OF FULLDECKISMS (As in, "He's not playing with a full deck.")

"Body by Fisher -- brains by Mattel."

A .22 caliber intellect in a .357 Magnum world.

A great deal of pride, but very little to be proud of.

A legend in his own mind.

A modest little person, with much to be modest about. -- Churchill

A natural talent for finding subliminal messages in ice cubes.

A notch off the timing mark.

A photographic memory, but no film

A room temperature IQ -- centigrade.

A titanic intellect... In a world full of icebergs.

A walking argument for post-natal abortion.

All foam, no beer.

All Preparation, no H.

As smart as a politician/lawyer is honest.

Attic's a little dusty.

Back burners not fully operating.

Baler done run out of twine.

Can't count his balls and get the same answer twice.

Chimney's clogged.

Confused as a baby in a topless bar.

Conserves toilet paper by using both sides.

Couldn't find his way through a maze even if the rats helped him.

Couldn't pour water out of a boot with instructions on the heel.

Couldn't tell which way the elevator was going if he had two guesses.

Dealing with him is less fun than going to the dentist.

Depriving a village somewhere of an idiot.

Doesn't have a fart's prayer in a hurricane.

Doesn't have all his cornflakes in one box.

Doesn't have both oars in the water -- can't even find the ###### boat.

Doesn't just know nothing; doesn't even suspect much.

Dumb as a sack of hammers.

Fell out of the family tree.

Fifty-one cards short of a full deck.

Fired from McDonald's for having a short attention span.

Forgot to pay his brain bill.

Gears grind/don't always mesh.

Gets lost in thought -- it's unfamiliar territory.

Got into the gene pool while the lifeguard wasn't watching.

Has a divide-by-zero look on his face.

Has a full six-pack but lacks the plastic thing to hold them together.

Has an inferiority complex, but not a very good one.

Has been seen tossing bread crumbs to helicopters.

Hasn't got all his china in the cupboard.

He donated his brain to science but they made an early withdrawal.

He fell out of the ugly tree and hit every branch on the way down.

He's a man on a mission, but can't find his dossier.

He's really into himself... His head is up his ass.

Her blender doesn't go past "mix".

Her dentist went deaf from the drill's echoes.

Her gene pool could use a good filter.

Her leads need resoldering.

Her lint trap is full.

a sandwich short of a picnic is my favourite

also

As confused as a child in Kirkby on Fathers Day.......

confused as a baby in a topless bar gets my vote

Lights are on but nobody's home.

Lights are on but nobody's home.

Perhaps not quite the same...but.....once said of a certain American politician.

On the surface he appears shallow, but the deeper you dig the shallower he becomes.