Ways to call someone dumb.

1. A few clowns short of a circus
   
2. A few fries short of a happy meal
   
3. An experiment in Artificial Stupidity
   
4. A few beers short of a six pack
   
5. Dumber than a box of hair
   
6. Doesn't have all his cornflakes in one box
   
7. The wheel's spinning but the hamster's dead
   
8. Not the coldest beer in the fridge
   
9. One Fruit Loop shy of a full bowl
   
10. All foam, no beer
    
11. Has an IQ of 2 but it takes 3 to grunt
    
12. Couldn't pour water out of a boot with instructions on the heel
    
13. An intellect rivaled only by garden tools
    
14. Has the IQ of a house plant
    
15. As smart as bait
    
16. Chimney's clogged
    
17. Elevator doesn't go all the way to the top floor
    
18. His antenna doesn't pick up all the chanels
    
19. Proof that evolution can go in reverse
    
20. Not the sharpest tool in the shed
    
21. The lights are on but no-one's home
    
22. The light at the end of the tunnel has been extinguished
    
23. 2 sticks short of a bundle
    
24. A few pints short of a quart
    
25. Cables connected, no voltage
    
26. Swimming in the shallow end of the gene pool
    
27. One neuron short of a synapse