Michael Douglas

Michael Douglas says that oral sex is possibly to blame for causing his throat cancer.

In an interview with the U.K.'s The Guardian, the 68-year-old actor said, "Without wanting to get too specific, this particular cancer is caused by HPV, which actually comes about from cunnilingus ... I did worry if the stress caused by my son [Cameron]'s incarceration didn't help trigger it. But yeah, it's a sexually transmitted disease that causes cancer. And if you have it, cunnilingus is also the best cure for it," he joked (we think).

Michael Douglas and Matt Damon go Behind the Candelabra

Douglas, who's been married to Catherine Zeta-Jones since 2000, revealed his diagnosis on the Late Show with David Letterman in 2010. The following year, after eight weeks of chemotherapy, he said his tumor was gone.

Douglas most recently played Liberace in the HBO biopic Behind the Candelabra.