Two, but you have to get them in there first.
A: Three. One to screw it in one to watch and one to shoot the witness.
None, they just make the nepalese do it.
How many South Americans does it take to screw in a light bulb? A Brazilian!
Just one, but they get extra credits for it
Because otherwise they would be unable to track movement and move the cursor in the computer screen.
Getting it to fit over a bucket !
