Etchi or エッチ is used in situations like ‘エッチ movie’ etc. meaning sex or sex-related, basically.
I think my friend Lee taught me this word. Even though I’d been in Japan for some time by that time, Lee’s anime words give him a different vocabulary set to mine.
Yesterday I found out that エッチ actually is just ‘H’, but said in Japanese ‘エ＋チ’. I’d never realised that. What on Earth does the letter H have to do with anything? If someone could tell me I’d be very grateful. All I think of are heli-pads when I think of the letter H!