Susan Olsen is best known for playing Cindy Brady on the popular 1970s show, The Brady Bunch, so you can imagine how shocked fans were to hear that the former child star once worked in porn — BEHIND the camera, that is!

"I had a friend who edited porn films," the now 53-year-old told WS FM101.7's Jonesy & Amanda show. "He said: 'Can you make space ship noises with your synthesizer?'"

Susan, who owned the electronic musical instrument, added, "He gave me $50 and I provided the sound effects for Love Probe From A Warm Planet — that's my porn title. That's my credit."

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