A downloadable video game clone of Guitar Hero. However, Neversoft decided it was too much like Guitar Hero, and sued it's ass. Despite Neversoft really not being allowed to sue them for anything, because some Japanese company owns the rights to rhythm video games that have guitars in them, Guitar Zero took down their website to go and make the game "Less Guitar Hero-ey".
Person 1: ZOMG, wi cantz i download guitar zero

Person 2: Because Neversoft's a bitch.
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Someone who sucks at "Guitar Hero"; Bad Hand/Eye Coordination.
Dude, Steve's a Guitar Zero, He sucks at it so bad.
by Colin McCaslin August 12, 2007
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A person who thinks and acts as if they are good at the game Guitar Hero, but in reality, they are horrible
Guitar Zero: Yo, let's go to my house and rip it up at guitar hero, i'm nasty... i'll beat anyone

Person: year right dude, you suck
by Teddi April 9, 2007
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A person who thinks and acts as if they are good at the game Guitar Hero, but in reality, they are horrible
Guitar Zero: Yo, let's go to my house and rip it up at guitar hero, i'm nasty... i'll beat anyone

Person: year right dude, you suck
by Teddi April 13, 2007
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1. People who suck at all the Guitar Hero games.

2. Anyone who doesn't have friends to start a real band and as a result, join online bands on Guitar Hero World Tour all day long.
1. Sam: Jeeze Jeff, you got booed off again!!?!?!
Jeff: yeah.
Sam: Dude, you're a total guitar zero!

2. Philip wanted to be in a band, so he joined one on Guitar Hero instead of following his dreams and making a real one.
by Dr Lina P July 9, 2009
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Someone who plays guitar hero on easy when online.
May or may not have passed medium, expert and hard but insists on playing on EASY all the time.
Prcatises so much they will always get 100% and win.
Gary: Aww man that sucks, you just lost playing Guitar Hero. You must be gutted.
Judy: Nah not really I was playing a complete Guitar Zero
by Elkie :) August 2, 2008
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