What is your favorite expression to describe a "strange" person?

My husband & I have several of these that I can think of:
1.)A few bricks short of a load.
2.)Not enough cups in the cupboard.
3.)Not playing with a full deck.
4.)Elevator doesn’t go all the way to the top.
5.)Touched or Tetched.
And the hand’s off favorite:
6.)Porch light’s on but nobody’s home.
What expressions do you use?

My wife and I have a few:

that person must:
Be a couple sandwiches short of a picnic.
Have fell off the asshole tree and hit every branch on the way down. (same goes for ugly tree) <- a little too mean though.

damn I’m drawing a blank. I’ll come back to it.

A few fries short of a Happy Meal.
A dime short of a nickel.
Dumb as a box of rocks. (If they’re a dumb ass, of course.)
That (guy/girl/whatever) needs a format and reinstall. (I’m a computer geek, what do you want form me?)

Still correcting for Y2K.

or, check THESE out…

http://herbison.com/canon/fulldeck.html

Rather an Odd child, hmmm?

Total waste of skin and oxygen.

Him/her and the crack that s/he smokes.

He’s a special case.

No one else has his special talents, or would want them.

I can’t say enough good things about him.

Crazy as a Shit-House Rat!

His morality and intellect is equitable to the curd what thrives on the underside of municiple toilet seats.

Crazy as a syphilitic monkey!

(from a Dean Koontz book)

Not the brightest bulb on the tree
Not the sharpest tool in the shed
About as sharp as a sack of wet mice

Looks like he wandered off.

NQR (stands for not quite right).

John is …

more than happy. (thanks, George Carlin)

His mother must be SOOO proud (rolling eyes).

One wheel in the sand.
A few tacos short of a combination plate.
Doesn’t have both oars in the water.

Are you trying to kill this thread or something?

My favorite: His belt doesn’t go through all the loops.

She has spiders in her head.

(often shortened to just a whispered “Spiders”.

*Two short of a brick-shit house

Mother’s a virgin, I swear

Got a loaf of bread with no butter

He eats hamsters

I used to be his flatmate - always had problems with toilet paper

I don’t know*

She’s several standard deviations away from the mean. (This is for anyone who has a background in statistics).

That guy is a lost ball in the high weeds.

So far short of a six-pack she doesn’t even have the plastic thingie it came in.

Mind like a cotton sock.

From my boyfriend: “Dwugs have huwt her widdle bwain.”