Rei is the banana now: Yellow on the outside, white on the inside. (It's how a classmate of mine once described herself)

AlsoSprachOdin2 said in comment #2603162:

(It's how a classmate of mine once described herself)

Wikitionary:

Noun - Banana

4: (derogatory, ethnic slur) A person of East or Southeast Asian descent, considered to be overly assimilated and subservient to white authority. [from 1970]