A video has surfaced online that shows Cristiano Ronaldo eating something retrieved from his manhood area during Portugal's clash against Ghana.

Ronaldo was in action for his side as they began their World Cup campaign against the four-time Africa Cup of Nations winners at Stadium 974.

The recently sacked Manchester United star looked lively as Ghana struggled to contain the 2016 Euro champions. Ronaldo eventually broke the deadlock in the second half via a hotly contested penalty.

The Selecao scored further goals through Joao Felix and Rafael Leao to put Portugal in the driver's seat for round of 16 qualification, while Ghana scored consolation goals through Osman Bukari and Andre Ayew.

But apart from the match incidents, fans have reacted to a video that shows Ronaldo eating something that is retrieved from the front of his shorts.

Fans were at a loss to understand what the five-time Ballon d'Or winner might have eaten, with others claiming it was sugar pellets for energy.