Found the thread at last! A couple of updates:
In my line of work the trick with nicknames is to take a surname and make a phrase or famous name by changing the christian name, hence 'Multi' Storey and 'Vera' Duckworth.
Anyway, we've got a new guy arriving soon whose surname is Crayon
. He's already known as Waxy
A friend of mine's GF had a new girl join where she worked, whose surnme was Stone
. The girl said "they used to call me Sharon where I worked before". Mate's GF replied "Not here they won't Twenty
Last but not least I was recently introduced to someone with the surname Thirtle
. I spent the whole time giggling childishly and trying to avoid calling her Ninja