When I was in the my high-school tech campus, I made friends with these two girls who never actually learned my name. One day they just called me 'Paul', which isn't even remotely close to my real name... it only shares one letter, in fact. I found it hilarious and didn't correct them, so hence I was 'Paul' to everyone in the class except for the teacher. I needed a username later, and I didn't really have anything planned out, so I went with Paul. The second part is my last name, though I usually put 'Tower' at the end instead, so it reads 'PaulsTower', after my user icon, since regular 'Paul' is generally taken/too short.