Drip drop drip drop splat!
I feel ill I am off to get a drink. Ah! I wanted a drink not a shower, what is that? A leak below the bathroom. Oops I have left the bath on. Let me run upstairs and the bath is off, it must be the pipes, let me ring a plumber and get him to come.
Several hours later, he had just left but the spot just grew and grew until that night. I was just getting out of the bath getting serenaded with drips and drops when the floor collapsed. Crash bang wallop!