Embarrassed by Musical Socks

I was looking after a question-answer session during our open day today when somebone's mobile phone went off. A silly, reedy, ringtone which sounded like the drinking song.

Turned out to be my socks. I had been given a pair for christmas which play tunes and I'd triggered them when I crossed my legs. It is kind of hard to manage a serious discussion of academic prospects and student finance when your socks are making music.....