When I was about 10 I was super into horses. My older friend had made a website and I was like "I wanna do that too", so I decided to make a horse forum called ponyroom. I spent weeks learning html, spent many hours making the crappy little front page of my website, tried to learn javascript, couldn't make head or tail of it, realised that the url "ponyroom.com" was already taken, and gave up. When I was first telling my friend about the idea, I somehow misspelled it as "poxy rom". Then the next time i registered for something, I used the username "poxy-rom" which became "poxyrom" and then "poxirom".