Beats my method, I guess. I open the door naked and throw myself at the feet of the census taker while loudly chanting, "He's returned, he's returned." Of course, this method also works exceptionally well for Jehova's Witnesses and Mormon missionaries and that obnoxious dude who wants to sell me a burglar alarm system. I don't think I'll ever see him again.
Maintain eye contact, and slowly, casually strip in front of them. Ask if they like banjo music.
And if they say yes? FQ