I had this name since 2002/2003 when I was in my "weeaboo" stage. The earliest I can remember using this username was back on PokemonElite2000's forum in 02'/03'. "Housyasei"(放射性) means radioactive in wapanese and "-san" was something like "Mr/Mrs/Miss", so basically it means "Miss Radioactive"; radioactivity in general is pretty cool being a ( Read more... )