This PSA used to air on the New York area's channel 9, which also showed tons of horror movies, especially late at night.
So I saw it more times than I can remember, and it lodged itself in my brain. In recent years I began to think I'd imagined it. I mean, it seemed so bizarre: Funky music, brassy singer, lyrics warning about sexually transmitted diseases...
But here it is, courtesy of YouTube:
Now try to get that song out of your head. I dare you.