Sarah Silverman enjoys filming sex scenes.

The actress and comedian had to pretend to have anal intercourse on the set of her new film 'I Smile Back' and found it to be ''fun'', despite her preconceptions.

Speaking about how she got ready for the gritty drama, she revealed: ''I just really prepared and braced myself. It's funny because [I told a good friend about it] and I said: 'There's a scene where I'm having anal sex and blah blah blah.' And then, after the first week of shooting, he's like: 'How's it going?' And I'm like: 'It's okay. It's hard.' And he's like: 'How is the anal sex scene?' And I was like: 'Oh, it was fun! It was good!'''

However, the 44-year-old star - who has been dating actor Michael Sheen for a year - assured fans she has no plans to give up comedy for hard-hitting dramas any time soon because she rarely gets offered serious acting roles.

She told Vulture: ''I'd love to do more things but being a comedian brings me so much happiness. This just crossed my path. Usually I need to generate my own stuff, but when stuff comes my way and it's something so neat and exciting and different for me, I'd be dumb to pass it up.''