Robert Pattinson, Kristen Stewart and the rest of The Twilight Saga: Breaking Dawn — Part 1 cast made a special appearance on The Ellen DeGeneres show. The Twilight lovebirds tried to explain to Ellen DeGeneres the sex rules they had to live by: "cheek, no crack."
Ellen said she heard the Breaking Dawn sex scene had to be re-cut because Kristen went crazy and it was too steamy.
"She lost it," Rob joked.
"Yeah, I lost it. I totally lost it," Kristen said while making a "drive me crazy" face. "No, I didn't."
"Yeah, you did," Rob snapped back while laughing.
So, what really happened?
"There was too much butt crack, I think," Rob said. "They didn't cut the shot, they just cut the crack out. They just painted over it."
"They cover it so there's no crack on your butt. You just look like one solid cheek?" Ellen asked.
"You're allowed to show cheek, but you can't show crack."
Watch a hilarous clip of their interview over at ellen.com!