Well interesting query this...
I started with the id uncle42thick
I was 42 hence uncle the thick, contrary to what people perceived was from my plant life. Uncle42 was taken so I had to use something n the only thing around me was a vernier calliper hence thick
After a few years, and the rules given I changed it to U42t, so my friends could recognize it, but, uncle42 had such a strong aura it never left. Here I was trying again to rename myself and while thinking about it, I thought y not Urum.. U depicting ne n rum was my late wife's pet name from me..
Hence Urum
Coincidentally, tamil word for manure is uram so it was nice