Amy Schumer's major regret over John Cena scene where he was 'inside her'

Amy Schumer shared a 'major regret' about filming a sex scene with John Cena.

The pair appeared together in the movie Trainwreck, where Schumer played a woman who doesn't believe in monogamy, having a lot of relationships, until of course she meets the right man and things eventually work out, with Bill Hader also co-starring in the 2015 comedy.

But part of the film involved shooting a sex scene with former WWE star turned movie star Cena, who is one of the men with who Schumer's character has an encounter over the course of the movie.

And Schumer spoke to MTV Australia in a bizarre interview which touched on everything from fantasies about LeBron James, who also had a part in the movie, to how Schumer got into character for the role.

And of course, it also went into awkward detail about the scene that she shot with Cena.

Asked what it was like to have Cena 'on top' of her, Schumer replied: "It was like a refrigerator fell on me."

The pair shared a comedy sex scene (Universal)

She added: "I think it was probably harder for him, he had to like, do something. I just did what I usually do when I have sex, just lay there."

In a bizarre turn of questioning, the interviewer then asked her: "Did his balls have muscles, I feel like everything's got muscles."

Schumer didn't seem to miss a beat despite the question, joking: "You know what I didn't get to feel his balls."

She added: "It's a major regret of mine, major regret, we'll have to just hope that they do."

Schumer would even joke that Cena 'was actually inside her' when they were filming the shoot, as she joked about the awkward scene.

For his part, Cena has also opened up about his role in the movie, which he revealed he was keen to get right, saying that his part was 'written simply to be a one scene gag'.

"Amy's true experience in life where she had way too physical sex with someone and it was like 'this is just too physical, I can't, like I'm out' because it's a gag and super funny," he said.

Cena said he 'came prepared' for his part in Trainwreck (Universal Pictures)

Cena even said that they had done 'stunt rehearsals' for the scene.

"We did stunt rehearsals and we used none of it because of the audition and their ability to pivot and be like 'oh man' but I came prepared dude," he said.

The wrestler turned actor went on to say that he was determined to give his best performance for the short period he would be on screen.

"I came prepared and confident and knew like 'okay, I'm giving this small window of probably 90 seconds on screen my everything' and what I'm not going to do is get out of that audition and say 'I could have done more'," he said.

And needless to say, Schumer's joke that he 'was actually inside her' is very much not the case, as Cena revealed that he wore a specially designed 'spandex sock' to keep things in check during filming.