Jenny had a much more important question (Picture: Channel 4)

Gogglebox viewers were left in hysterics over Jenny Newby’s hilarious reaction to Cara Delevingne’s orgasm experiment.

In her new documentary, Planet Sex With Cara Delevingne, the supermodel embarks on a mission to explore the mystery around the ‘gender climax gap’, which is a term used to describe why men are more likely to orgasm during sex than women. 

During one scene, she gives researchers a sample of her blood before and after embarking on a solo sex act so they could study its effect on her body chemistry. 

While the 30-year-old was trying to answer questions surrounding the female orgasm, Jenny, sat beside her best friend Lee Riley, had a much more pressing question.

As Cara explained: ‘We are about to go into a university hospital where I am going to masturbate,’ Jenny looked at Lee and asked: ‘What, on the NHS?’

Lee, just like viewers watching at home, was left in hysterics.

‘“What, on the NHS?!” has me dead I love Jenny,’ one viewer wrote.

Another penned: ‘”What, on the NHS?!” Incredible.’

In the first episode of her show Planet Sex, Cara explores ‘the orgasm gap’; with statistics showing that 95 per cent of straight men orgasm during intercourse, but only 65 per cent of straight women do.

‘For me the earliest ideas I ever got taught about sex were man plus woman, dick plus vagina equals orgasm,’ she said while speaking about the stark difference in people getting pleasured.

‘I don’t want to go into the art of making a woman come, but it’s just a lot more complicated and a lot more fun,’ she added.

‘I can’t believe I did it, to be honest.’ (Picture: BBC)

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After donating her orgasm to science, she says: ‘I have had some weird sexual experiences, but this is definitely up there.’

As Cara admitted, taking part was one of the ‘bravest’ things she had ever done.

‘I can’t believe I did it, to be honest.’

Planet Sex is available to stream on BBC iPlayer.

Gogglebox airs Fridays at 9pm on Channel 4.

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Cara was donating her orgasm to science.