From Infinites 10Asia Interview shortly after debut:
"The name of the dance team I used to be in was ‘BK’. The letters stood for ‘Black Korean’. Because African-Americans have good physical bodies, good elasticity/flexibility during dancing, and good vibrations while singing, I was jealous and purposely went to go eat hamburgers with my hyungs who danced and learned slang that African-Americans use.
It was to the point that once during puberty, I asked my mom, ‘Why aren’t I African-American?’. My mom’s answer? ‘Because I’m not African-American.’”