Maybe he's playing in the nude? I mean, over the internet, no one would know... In Blockland though, you can show your true self freely, and no one would get mad!
Hopefully that's not what he's putting on display, as I would still be rather unappreciative of such a thing. Your personal life is your own. If you want to play in the nude, feel free to do so, but don't tell me about it. :P Mouser X out.