Who says it's dark
It doesn't matter.
Because, they're so darn stupid!
Tires need changing too you know!
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
The optimist sees the light at the end of the tunnel. The pessimist sees nothing. And the realist sees the train.
An Optimist learns German. A Pessimist learns Chinese. A Realist learns AK-47.