Mad Mark - When someone promises to be super edgy and cool, but ends up

When someone promises to be super edgy and cool, but ends up being just average and kind of annoying.

'I'm gonna drop out of school and live in the streets!' ... then he showed up to class wearing the same shirt every day.

'I'm gonna start a band!' ... then he just played the same three songs on loop.

'I'm gonna be the next big thing!' ... then he posted a selfie and said 'look at me.'