Many Japanese houses have electronic toilets these days – though not everyone, as some may have noticed…
This is something interesting about Japanese culture: in English one could ask “May I use your toilet, please?”, or teenagers might say rather plainly “Can I use your loo?”. In Japanese the word use is just too visual, so they prefer the following two phrases. (Very useful to know).
トイレを借りてもいいですか。
トイレをかりてもいいですか。
toire o karite mo ii desu ka
May I borrow your toilet, please?
Note the little fountain above the cistern – very Japanese!
トイレを貸して下さい。
トイレをかしてください。
toire o kashite kudasai
(literally: Please, lend me your toilet.)
May I borrow your toilet, please?
This is what you call ‘a relief’ to know.
Lami Japan 
