Ashton Kutcher keeps a prosthetic penis in case he has to 'drop trou' on set

The 37-year-old actor carries the artificial body part with him to every set in case he's forced to drop his pants on camera, and he admits the bizarre prop came in handy when he was performing his debut episode for Two and A Half Men in 2003.

Speaking on Conan on Wednesday, his co-star Jon Cryer, 49, said: "In the very first episode that Ashton was in, there was a point at which he was supposed to drop trou and be completely naked in front of me.