The actress, who plays a lesbian in the film, was apparently taken aback at how graphic the sequences she had to perform were.
She told The Daily Beast: "There is stuff I don't actually remember doing. When I saw the movie, I was like, 'Did we do that?' There's a lot of moving around. I don't remember it being that physical. But we wanted it to be funny and we really relied on each other."
The 49-year-old, who had several explicit scenes with Annette Bening and Mark Ruffalo, has acted in other erotic films including as a porn star in Boogie Nights.
