"Mengapa kamu ada di kamar mandi?"
Terjemahan:Why are you in the bathroom?
I suppose kamar mandi and kamar kecil are usually combined... but is there ever a situation where kamar mandi could mean specifically only a shower and kamar kecil just a place for buang air kecil/besar?
Kamar mandi = bathroom while toilet is called toilet in Indonesian. Yes, it is a borrowed word.