Kate Middleton attempts to contain Prince Louis as he taunts her with faces

Prince Louis displayed some decidedly non-regal behavior while watching the Platinum Jubilee Pageant on Sunday.

The 4-year-old was caught putting his hand over mother Kate Middleton’s mouth

in a video that has since gone viral on social media.

When the Duchess of Cambridge, 40, tried to politely stop him

no doubt through gritted teeth – the boisterous lad made a series of faces,

poked out his tongue and put his thumb to his nose while wiggling his remaining fingers.

Louis also decided to stand on his chair and appeared to throw a cushion

which is when Kate made the wise decision to take a break for a spell with her youngest.

Louis’ behavior even caught the attention of Mike Tindall, who is married to Prince William’s cousin Zara Tindall.