poser

1. Someone who pretends, or wants, to be something they are not.
2. A person who attempts to blend into a specific social group.
3. Someone who acts like someone they're not,but not realizing that there being fake, basically a loser trying to fit in.

Jason was such a poser-biker; sure, he has a bike that's all black, but it doesn't even run and it is in pieces. He would rather spend his money going to Vegas.