Ecchi Shiyou means “let’s do lewd things” or “let’s fuck” in
JapaneseIt all depends on how you say it, if said
wrong you’ll be in jail for attempted rape. If you say it the right way they’ll drop dead and open up to you.
From Papa Franku’s Japanese
101 Lesson
Joji saw a lovely girl on the
train one day, he had the courage to walk up to her and say with all his
heart “Ecchi Shiyou”, later that
night he became JOJO because of the extreme manliness.