A person who tries to be someone they're not following the modern day "grunge" lifestyle. Because nowadays people have to be something they are not.
Person A: Eww look at her shirt
Person B: What's wrong with it? It's just a Nirvana band tee... I thought you love them
Person A: I do but i really don't like how she can just be something she is NOT.
Person B: OOOH i see... she is a wannabe
Person A: She is specifically a grunge wannabe.
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