A disturbing gag referencing King Charles' recently unveiled royal portrait has got people in stitches after featuring an 'Italian' petrol pump sex act that has been going viral.

The X-rated video clearly showing a man shoving a petrol nozzle up his backside while touching himself has been all the rage on the internet in recent days. Caught red-handed, the strange man left people scratching their heads about what on Earth he was doing and why.

In the odd clip an elderly-looking man can be seen standing at a petrol station literally shoving the petrol hose nozzle into his rear while masturbating. Now the grim snippet has been unusually united with a video of King Charles unveiling his latest portrait.

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The gag, which has got X users in quite the state, shows the monarch pulling a cord to drop the black curtain and unveil his first portrait as King, by Jonathan Yeo. But what lays behind the sheet is actually the infamous creepy man behind the petrol pump sex act.

King Charles III at the unveiling of artist Jonathan Yeo's portrait of the King
The true unveiling obviously went down a little differently

The bloke, seen wearing a bright orange baseball cap, slowly turns his head during the original clip, likely to see if anyone is looking. He then appears to spot the person filming him who starts shouting at him in bizarre scenes.

Reacting to the gag, one user said: "I just choked on my morning coffee." Another remarked: "Oh this is genius."

Now seen by more than 1.3 million users, another said: "I was just able to get him out of my [mind] and now back to square one".

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