On The Project, Amy Schumer and Bill Hader talk about that sex scene in their movie 'Trainwreck'. Courtesy: The Project

Amy Schumer and Bill Hader and that sex scene from 'Trainwreck'

AMY SCHUMER left Twitter in stitches with her joke about a sex scene in her new film Trainwreck, where she shares a bed with wrestler John Cena.

Schumer was on the show with her movie co-star Bill Hader, where she was led to discuss the sex scene in their film by Fifi Box from The Project’s panel.

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Box started off saying: “That intimate scene with you in the bedroom, Amy..”

Before they could continue, Hader interrupted, saying:

“The sex scene? That was so sweet of you! “The scene in the bedroom where you’re intimate, on top of each other.”

When asked how many takes it took to shoot the scene and how she kept a straight face during it, Schumer comically replied: “Because he was actually inside me. Who am I to stop him?”

Her hilarious reply had the live audience hooked, waiting for more.

The Project’s Peter Helliar continued to interview her, saying “Inside your apartment, that’s what where...” before Schumer interrupted again.

“It’s alright if you want to call my vagina my apartment,” she said.

“I’m not from here. I don’t know what you guys...”

Hader then chimed in again, saying: “Yeah, is that what they call it here?”

The live audience erupted into more laughter and applause as the pair lit up social media with praise.

Many viewers hopped on Twitter, writing to Schumer, telling her she was the funniest guest they had seen on The Project, and thanked her for being so honest.

Hader also received lots of praise from fans.

Dearest @amyschumer Your appearance on tonite's #theprojecttv is the funniest thing I have seen on OZ tv...EVER!! Thank you for the laughs! — Maybel Syrup (@Maybel_Syrup) July 21, 2015

Now here’s what John Cena thinks of Amy Schumer.