A. Buying an import car and performing cheap mods. (see Ricer)
B. Puting parts and stickers intended for use on an import car onto his domestic car. (like seeing a Mustang with a kanji symbol on it)
C. Dating only Asian chicks and any one of the afore-mentioned offenses.
2.) But also used to describe a Caucasian person who has actually lived in an Asian nation for a while or grew up in an Asian family. Not derogatory.
2 We call him White Rice cause his dad was in the military stationed in Japan for 12 years.