Nostafag 

One that is within the nostalgic phase of their late teen years.

He's being a nostafag right now. He'll get over it.

Nostafag by Nemmex May 6, 2011

Nostafarian 

A word with no meaning, it's just an insult to say to someone when you have nothing else to think of.

You nostafarian, you're just as bad as that facehead down the street.

Nostafarian by Toby Maller January 31, 2007