The act of being temporarily obsessed with a movie, actor, song, artist, game or television show from the 80's and gloating to peers and family about how "good times used to be", ironically this predominantly occurs in people who were either to young to remember or weren't alive during the 80's
Guy 1: I've then watching a whole bunch of Arnold Schwarzenegger movies lately
Guy 2: stop it man, you having a 80's Comeback Tour