Wacky actor BILLY BOB THORNTON has revealed his most bizarre sexual proposition - he was once asked to sleep with a man... and his dog.

The U-TURN star spent his formative years growing up in the small American town of Malvern, Arkansas, where he received the perverted invitation. He says, "I was once invited to be part of a menage a trois with a guy and a dog once. When I was 17 or 18, there was a guy in town who I knew was a dog-f***er - everyone knew. "He asked me once to f*** his dog. "So, I guess I wasn't actually propositioned by the subject, I was propositioned by its partner." (CPT/MHF/RGS)

Source: WENN