Your nerd has control issues. Your nerd lives in a monospaced typeface world. Whereas everyone else is traipsing around picking dazzling fonts to describe their world, your nerd has carefully selected a monospace typeface, which he avidly uses to manipulate the world deftly via a command line interface while the rest fumble around with a mouse.
A nice guide to understanding nerds (should be replaced by “geeks”, but I don’t want to be one of those annoying nerds that requires all the words to be exactly used). (via @relva)
Nerds are fucking funny. Your nerd spent a lot of his younger life being an outcast because of his strange affinity with the computer. This created a basic bitterness in his psyche that is the foundation for his humor. Now, combine this basic distrust of everything with your nerd’s other natural talents and you’ll realize that he sees humor is another game.