Someone who thinks that because they are good at the video game Guitar Hero,they have a shred of talent with an actual guitar. They are usually mistaken.
Joey: Guys, we should jam this weekend. I just did Bark at the Moon on hard!

Lucas: Quit fagging up our oxygen with your n00bishness and idiocy, you guitar hero poser.
by Jakelikescake June 08, 2007

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Top Definition
A little kid that plays the game Guitar Hero way too much and then thinks that they are cool because they listen to rock music. But truly, they don't know any songs other than the ones in the game.
"Man, your brother is such a guitar hero poser, he thinks he's badass because he knows one song by Megadeth."
by raven68 April 09, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt