FP stands for FUCKED PRONUNCIATION – the Japanese equivalent of English’s silent ‘p’ in ‘psychology’ : words like 田舎 (countryside), which, according to the ONyomi of its respective kanji, should be pronounced でんしゃ. . .but it’s actually pronounced いなか.
Or お土産 (souvenir) , which you’d think would be pronounced おどさん, but it’s actually pronounced おみやげ!
KANJIDAMAGE