How many pessimists does it take to change a light bulb? None - it's probably screwed it too tight anyhow!
Two. One to screw it almost all the way in and one to give it a surprising twist at the end.
Nine........one to do it and eight others to wish they'd been asked.
You get an unpleasant vowel movement.
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
Just one... But it takes 4 episodes and Krillin dies...
Two, one to hold the bulb and one to rotate the universe.
They refuse to look at the silver lining.
An Optimist learns German. A Pessimist learns Chinese. A Realist learns AK-47.