A person who obsesses over guitars and guitar related paraphernalia. This Person spends most or all of there time talking about guitar and famous Guitarist they barely take the time to actually learn how to play a song from start to finish. A large number of these people attempt to learn songs like 'stairway to heaven' by 'Led Zeppelin'. A guitar nerd will also obsess over a certain model or brand of guitar such as the Les Paul, Stratocaster or SG.
Guitar Nerd: I just bought a new Pedal for my SG.
Friend One: Ya that will go good with all your other pedals, amps and guitarsyou don't know how to use.
Friend 2: Dude you are such a guitar nerd!
Rude Nerd is who person tries to tells you that when a call you a nerd because who person wants you like to be one. It cause they don't care your style then it really hurt your feelings. Emos don't like nerds cause they are bitch and not smart. All nerds aren't too bad. Some nerds are smart. Some nerds are rude. Some are nice.
'Sick Nerd' was once a popular Oldschool Runescape streamer.
Doing a 'Sick Nerd' involves playing the victim in any situation to ease the hatred towards you, it can also be used to refer to someone as lazy or ungrateful especially within the Oldschool Runescape Community.