Actor Michael Kelly has discussed one particularly vomit-inducing moment from House of Cards' final season.

The 49-year-old portrays Doug Stamper in the political Netflix series and during the making of its sixth and last season, he was tasked with performing one of the show's trademark techniques.

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Chatting to Entertainment Weekly, Kelly told of how he first reacted to finding out he'd be breaking the fourth wall (addressing the camera directly down the lens) in the new episodes.

"I read that [in the script] and I was like, 'Guuuuuys. I don't know about this!'" he reflected. "It's the same as when people would ask me all the time, 'Oh my God, please tell me Doug's gonna be president one day' before every season, and I'd be like, 'No! Can you imagine that guy on the campaign trail? He's not good at talking to people'. You know? He's just not good at it.

"So when I got that [note], I was like, 'Okay, alright guys, I'll do it, because I never doubt you as writers, but I gotta figure this out. Who's he talking to? Is he talking to himself? Is he talking to Frank?'

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"I sort of made it a combination of those two, and I did not for one second ever pretend I was talking to the audience. I was either talking to myself or to Claire or to Frank — mostly to myself, sort of lending to the madness."

Even though he eventually managed to get through it, it seems the Chronicle actor still found the whole thing terrifying enough to almost vomit.

"I wanted to throw up," Kelly added. "I probably threw up in my mouth a little bit when I first saw it."

From: Digital Spy