na-adjective, noun
Slangy, jocular term formed by visually mimicking エロ with the kanji 工 and 口. Used online and in casual contexts to refer to sexual content in a playful or euphemistic way.
See also: エロ
そのサイトは工口な画像ばかりだった。
That site was full of erotic images.
工口な話はやめてください。
Please stop with the dirty talk.