Nice one (again!) BP
I remember at Outward Bound early seventies we had to sing in unison in the showers if we wanted hot water and we chose the 'Chesdale cheese' song from the advt. - as it was the only one we boys all knew. "We are the boys from Chesdale, we really know our cheese..." etc. etc. The louder we sang the hotter the water. V public school wot?