What a great thread, I could work out most names but 'Njaco' had me stumped. Makes perfect sence once you know.
I got Switcha by accident many years ago. We had to log into a computer program using our first initial and the first 6 letters of our surname. I never realised that it actually spelt anything before then and ever since then I've been known as Switcha or Switch. It came in real handy once on line gaming took off as it rolled off of the tongue easily and has served me well in Battlefield #####,COD####, HoH#### etc, etc
Cheers Switch