Weaboo

Weaboo (or "weeb" for short) is someone who has an unhealthy obsession with anything related to Japanese culture (food, anime, manga, traditions, etc.) and denounce their own origins. These people believe that they are Japanese in some aspect (or sometimes entirely). Weaboos are not to be mistaken with normal anime fans who have a sane mentality and have a firm grasp on reality.

My friend is a weaboo. He speaks broken Japanese to me almost daily.