A nick name is a fake name which can replace your real name. They are can be coined by your friends or peers, by your enemies, or by yourself in an attempt to stay anonymous. They are often used on the Internet as nicks or as handles
Your nick name can be derived from almost anything, whether it be a basterized form of your real name, or from an inside joke understood only by your peers, or just picked randomly; the possibilities are endless.
Some famous nick names include: Charlie is a nick name used by the military which means "the enemy".
Deep Throat was the nick name of the informant that blew the whistle on Richard Nixon and created Watergate (another nick name!!)
The mp3 file swapping service, Napster was named after Shawn Fanning's nick name.