A white person (aka honky) that personally identifies to be Japanese despite not living there, and renounces all white personality characteristics. Can often be found in the wild arguing whether Kansai or Hiroshima okonomiyaki is best and only watches anime without the subtitles.
Jack has become such a Nihonky, he keeps banging on about passing the N3 language test and says a Sunday dinner is nothing compared to Ichiran ramen.
by C_Rod January 11, 2021