Think you douche-it-all
A person who tries to diss on something that he/she knows nothing about.
Rego: You play Magic! Man that game is so gay and for nerds!
Jeremy: Fuck off! You know nothing of the game. You're a fucking think you douche-it-all.
Jeremy: Fuck off! You know nothing of the game. You're a fucking think you douche-it-all.