Nerd Vice
A specific hobby or task that a person (nerd or not) engages in that is particularly nerdy. Usually used to describe their main or only nerdly occupation.
Bill - Hey Jay, you up for some D&D action?
Jay - Naw man, I'm gonna stay home and watch Return of the Jedi.
Bill - Yeah, I forgot that Star Wars is your nerd vice.
Jay - Naw man, I'm gonna stay home and watch Return of the Jedi.
Bill - Yeah, I forgot that Star Wars is your nerd vice.