also: けつマンコ
Vulgar slang term for the anus. Strongly offensive; used in crude or insulting contexts.
See also: まんこ
That guy's asshole is seriously loose, isn't it?
Say that again and I'll stick a finger up your asshole.
Katakana spelling is common for this vulgar slang term; usually written in kana.
Kanji-katakana mixed form; rare and restricted reading.
Kanji-hiragana mixed form; rare.
Compound of ケツ (butt, vulgar) and マンコ (vulgar term for vagina). The exact origin is uncertain, but it is a crude slang coinage.