I recently read a copy of Brian Reyes’ outrageous book, Dark Horizon, which he describes as “a vulgar yet playful book of insults”. It’s a spoof of the popular English textbook series, New Horizon, which has been read in Japanese public school since 1965. Here’s how Brian describes it:
I thought about the characters from New Horizon, and what they would be like 10 years later if they fell on hard times. In my version of the book, the character Mike is homeless, Emi is a prostitute and good ol’ Ann Green sensei is a suicidal hostess. They have rude conversations and Japanese can learn some very rude English insults. I included Romaji in the book, so it works well for English speakers to learn naughty Japanese phrases too!
It’s a hilarious, irreverent read. You can get it in Amazon and lots of Japanese shops.