Fans lose it over tiny detail in Cristiano Ronaldo’s Instagram upload

Cristiano Ronaldo and his son showed off their impressive physiques, but fans couldn’t take their eyes off of something else.

Cristiano Ronaldo showed off his son’s incredible six-pack – but fans were more interested in another detail in the uploads.

The five-time Ballon d’Or winner shared a picture of him working out in the gym with Cristiano Jr on social media, The Sun reports.

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Fans saw two photos of Ronaldo topless and sockless standing next to his son, with the pair both showing off their abs.

The former Manchester United and Real Madrid ace captioned the post: “Today with my partner️.”

Reacting to the photos, one follower replied: “The King and the prince.”

But most of his fans were more taken by why the Al-Nassr star’s toenails were black.

One eagled-eye fan said: “Black nails? Wtf dude.”

While another added: “What’s wrong with ur toe. It’s black.”

A third responded: “CR having black nail polish.”

Cristiano Ronaldo and his son. Credit: Instagram/@cristiano

The toes stole the show. Credit: Instagram/@cristiano

And a fourth decided to explain the reason for the black toes: “If anyone was wondering why Ronaldo has nail polish, it’s because black nail polish allows nails to be more resistant in general.”

The protective layer is supposedly the reason behind the Portuguese legend painting his toenails.

According to a source via German outlet Bild, athletes paint their nails or cover them with a protective layer to protect them from fungi and bacteria.

“Many top athletes do this to protect their nails from fungi and bacteria when they are stuck in sweaty shoes for hours. Even Mike Tyson,” BILD said.

Ronaldo isn’t the only athlete using the tactic. (Photo by Yasser Bakhsh/Getty Images)

It’s claimed it helps prevent toenails from cracking or splitting up.

A layer of nail polish hardens the toenail, which minimises the danger of the nail being damaged when competing.

Meanwhile, Cristiano Jr has laid bare his intention to play with his dad after sealing a transfer to Al-Nassr in October.

The 13-year-old has big shoes to fill if he wants to reach his dad’s legendary level, but appears to be on the right track.

Ronaldo signed for the Saudi Pro League outfit last January and has been on fire in the league ever since.

This article originally appeared on The Sun and was reproduced with permission.