1 definition by GREEN DAY DID NOT INVENT PUNK YOU STUPID BASTARD!

a "poser" is a person who sees a popular culture and suckles onto it like a leech, hoping to become "cool"
Ash "oreyt lads, u heard i bet you look good on the dancefloor? reyt tune that!"
Jim "yea! the Arctic Monkeys are OK"
Ash "The arctic who?"
All "OH DEAR! WHAT A FUCKING POSER!"
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