Jennifer Aniston appeared on Conan last night to promote Horrible Bosses 2, and the actress revealed that her character in the film, Dr. Julia Harris, wore a metal sex toy around her neck!

When asked about Dr. Harris' questionable jewelry, Aniston replied, "Oh that's a c*ck ring." Then when she noticed the audience's reaction, she repeated, "It is a c*ck ring."

"Was that your acting choice?" O'Brien asked. "It was an active choice," Aniston said. "It was one of those things where they lay out the jewelry, and I gravitated towards that beautiful piece of jewelry. I put it on and I was like, 'This is unique and cool.' And I kept on trying on other bits of her wardrobe and I just kept it. They said 'Great, you chose the c--k ring'. And I was like, 'I'm sorry, come again?'" HA!

Who knew Justin Theroux's lady love had such a potty mouth -- or such a dirty mind!