Because it's the only time 'rich' and 'dark' are used to describe the same thing.
He uses his Donkey Tongs.
WD-4D
A toothbrush.
The whole thing was a gas.
He over 'd
O Cristor Redundant
They never let you finish first. (#s)
Nothing, you've already told her twice.
Which bird symbolizes love? Swallow.
Because of all the metal in their brains.
A sheet in the dark!
You don't need to, they glow in the dark.
It doesn't really matter, as long as it has good cocoa content.
Everybody gets a piece.
A: Ooga booga baby!
Purrfect