How many pessimists does it take to change a light bulb? None - it's probably screwed it too tight anyhow!
One....Two...One, Two...
None, they prefer Natural Light
Nothing, you can't cross a vector by a scalar. EDIT: changed multiply to cross.
Changed its status from 'In A Relationship' to 'Single'.
It depends on Deus Voltage
None. There are no light bulbs in the closet. Another one: Why is Justin Bieber so pale Because there's no light inside the closet
Only the good die, Jung.
They refuse to look at the silver lining.