Like it or not, old people do the nasty. And apparently, they often do it unprotected, which is why you get to witness this new PSA featuring granny sex, set to techno music. Created by DDB New York for SaferSex4Seniors.org, the spot features fully clothed old people demonstrating a variety of sexual positions. It's a viral way to get people to recognize that STD cases in seniors have risen 71 percent in Florida alone. But then, how many seniors, other than those paid by Kraft, frequent the YouTubes? I hope for the sake of this excellent cause that the PSA gets some airtime during the local-news weather report.