Because suddenly Mr Wench becomes a real person and not just a teacher.
Don't you remember at school when you used to find out the teachers first name is was such a big deal and source of ridicule and disappointment. I may be talking a few years back when it was all a bit more formalised.
One of my teachers (Mrs Evans) was known for years as Pig on stilts (or POS to the informed). She was about 4ft tall, 4ft wide and permanantly tottered around on stilletoes.
It was only in my last year at school and on a geography field trip that we found out her name was Gwenovive !!!!!!!!!!!!!!!!!!!!
We were in disbelief and shock for days - it almost made her human apart from having a god awful unsuitable name
