Mine's just my surname shortened, which is the nickname I had right through secondary school. Strictly speaking, it should be 'Wils II', as I inherited it from my brother when he left 6th form.
The bizarre name that I sometimes use elsewhere on the net, anyone with my email address will know. It's a joint creation of mine and my step-brother's. Put together that name and the image of a sweating, overweight clown, wearing surgical gloves, wiggling his fingers so fast that they blur and you pretty much get the idea. And yes, I know exactly how disturbing that is. ;)
Wils the caulrophobic