It’s only natural that our Tim Murphy is a little Sexed out. When the first Sex and the City movie came out, we made him wait in the middle of the night to catch the men and women who had seen the very first screening. Last August we sent him to hang out with the crazy kids auditioning to be extras in the Sex and the City sequel. So this week, when we sent him to the streets again, he had only one question for the people of downtown New York: Are we tired of Sex by now?