What Happened to My Tap Tap in Japan?

The tap thing stopped after i got a new flatmate called peter he arrived in august and everything was all right but for a couple of weeks i did have a very disturbing time alone in the apartment trying not to think about this tap. It hasn't happened to me since so maybe it was just that you know that occasion and it's never going to happen again if it does happen again then i just will freak out i know it i've never told my girlfriend about this because i think it would probably worry her she gets scared by these things quite easily"