Some of them are very clever. Hope you enjoy reading them and maybe you know some people like this in your life too. :)
- One shingle shy a roof.
- Sharp as a bowling ball.
- His/Her elevator doesn't go all the way to the top.
- He/She is two tacos short of a combination plate.
- If brains were dynamite, he/she wouldn't have enough to blow his/her nose.
- Doesn't have enough sandwiches for a picnic.
- Doesn't know which side of the toast the butter is on.
- Got a few tiles missing from his/her Space Shuttle.
- Got the mental agility of a soap dish.
- Has two brains. One is lost and the other is out looking for it.
- Not playing with a full deck.
- Only operating at about half a watt.
- Surfing in Nebraska
- Some drink from the fountain of knowledge, but he/she just gargled.
- The cheese has slid off his cracker.
- The gates are down, the lights are flashing, but the train isn't coming.
- Was hiding behind the door when they passed out brains.
- Skating on the wrong side of the ice.
- Lugnuts rattling in the hubcaps.
- Doesn't have all the dots on his/her dice.
- About three cents short of a dollar.
And I saved the best for last : Was napping in the nut pile the day that God was cracking nuts.