A derogatory term used to describe any person fanatical about the Japanese culture and tries to become Japanese at any expense(and usually failing.)
A wapanese person is more acurately described as a social misfit that tries to find belonging by means of the Japanese Culture by entering a group or other groups of people with similar background and common interest(that being the Japanese culture.)
An adjective used to describe someone who appears vague or delirious. This may be through sleep deprivation, drug use, boredom or an innate, genetic wappiness.
Person 1: What the hell's wrong with that girl? She just garbled some nonsense then walked into a tree.
Person 2: Oh, Helen? She's a bit wappy this morning after staying up all night watching Spongebob and eating mini cheddars with James.