Ollie Locke has struggled to keep a straight face whilst being taught the best way to carry out a ‘ball massage’.

The Made in Chelsea star, 36, was one of three celebrities who signed up to prevent ‘spermageddon’ for the Channel 4 documentary Celebrity Save Our Sperm.

As male fertility rates plummet (they’ve declined by half in the past 50 years), he, Russell Kane and Melvin Odoom united in a ‘ballsy attempt’ to increase their sperm count in 10 days.

Part of the challenge involved being taught the technique which can help stimulate sperm, and the three men’s reactions were pretty priceless.

When first asked to volunteer for the demonstration, Melvin joked that his ‘phone was breaking up’, clearly not willing to strip down in front of the group.

But under the guidance of body work and intimacy coach Libby Shepherd, a model named Lazlo was on hand, and then went to work, pulling on his scrotum and kneading his testes as the men watched on.

Ollie Locke and Russell Kane tried to keep a straight face during the demonstration (Picture: Channel 4)

As she ran through the various type of massages, Libby also explained how the massaging helped to improve blood flow.

Although anything but immature students, the men did looked slightly shocked as they tried to take in what they were witnessing.

Eyes wide open, Melvin didn’t seem to quite know where to look, while Ollie appeared somewhat bewildered and grimaced at some point as the massages got more intense.

It was then explained that stress can reduce the chances of conceiving, so gentle massage play could help with relaxation.

But when it came to Lazlo being instructed to start pulling on his scrotum, Melvin seemed quite concerned and exclaimed: ‘No, no, no.’

Meanwhile Ollie appeared like he was doing his best to not crack a smile as Russell just took it all in.

However, as presenter Dr Anand Patel said, undertaking these exercises regularly was also vital to help catch testicular cancer in its early stages, and that every male over the age of 15 should be self-examining every month.

It’s believed that at the present rate a majority of Western males could be infertile by 2045.

So, to try and see if they could improve the quality and quantity of their sperm count, they men also changed their diets, tried to eliminate plastic from their lives, and gave up smoking, caffeine and sweets.

Celebrity Save Our Sperm is streaming on All4.

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