Rob Delaney and Sharon Horgan admit that they hated filming sex scenes in their hit British sitcom “Catastrophe.”

The sitcom stars stopped by “Jimmy Kimmel Live!” on Thursday night to chat about the popular romantic comedy, which recently aired its final season, and shared which parts of the show they regret writing.

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“All the sex stuff at the beginning, we were like ‘what the hell!’,” Horgan said when Kimmel asked if there was anything they wished they hadn’t written.

“You have to wear a baggie tied around all your junk,” Delaney added while describing the filming process. “And when you first put it on, you’re like ‘this is nice,’ but then like six takes in, it’s starting to constrict, and it’s painful.”

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“From my perspective, I have to have that baggie banging against me,” Horgan quipped. “It’s bad for you, but it’s sad for me.”

“And it’s terrifying for the director of photography because I don’t wear a bag on my rear end,” Delaney concluded.

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Horgan also said she was “so angry” at herself for writing a final scene which involved her running into the sea in just her underwear. “I’d had like six weeks of on-set catering [by that point],” she laughed.

The final season of “Catastrophe” is available on Amazon Prime.