The Duke of Sussex made a hilarious cameo in the Duchess of Sussex's 40th birthday video on Wednesday.
During the bloopers reel, Melissa McCarthy and Meghan couldn't help but laugh as Prince Harry could be seen juggling through the window of the Sussexes' Montecito home.
Harry has always been renowned for his sense of humour and practical jokes, particularly involving his family members. Long before becoming a father to Archie and baby Lilibet, he has had a natural rapport with children and loves to make them laugh.
Check out Harry's funniest moments through the years in HELLO!'s gallery…
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WATCH: Prince Harry makes hilarious cameo in Meghan Markle's 40th birthday video
Harry couldn't help but grin as the Queen inspected soldiers at their passing-out Sovereign's Parade at Sandhurt Military Academy in 2006.
The wonderful moment between grandmother and grandson was caught on camera as Her Majesty smiled at Prince Harry while he stared ahead and tried to remain composed, though he was clearly unable to keep a straight face.
"Now this is a face I recognise," the Queen famously said.
MORE: 9 photos that show the Queen's sweet bond with grandson Prince Harry
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Prince Harry pretended to be shocked when two-year-old Emily Henson made a bold grab for the royal's bucket of popcorn at the Invictus Games in Toronto in 2017. It resulted in a series of amazing photos of the Prince's hilarious reactions to the cheeky toddler.
MORE: 20 brilliant photos of the royals in hysterics that are guaranteed to make you smile
Harry convinced his grandmother, the Queen, to take part in a hilarious video exchange between the British royals and then US President Barack Obama and his wife Michelle, to promote the Invictus Games in 2016.
"Hey Prince Harry," says Michelle, arms crossed standing next to her husband. "Remember when you told us to bring it at the Invictus Games?”
"Careful what you wish for," adds President Obama waving his finger as a team of servicemen joke around in the background and one says "boom."
"Boom, really, please," remarks the Queen, deadpan, as her grandson mimicked a mic drop.
MORE: 7 times Prince Harry has made sister-in-law Kate Middleton giggle in public
Prince Harry cheekily jumped the gun as he challenged sprinter Usain Bolt to a race in Jamaica in 2012. The crowd cheered as the Olympian jokily let the Prince win.
MORE: When royals get caught up in the Olympic spirit - 12 fun photos
Prince Harry had crowds laughing as he pulled a silly face after seeing a sign which read: "red heads rule," jokily referring to Harry's hair.
The Prince greeted members of the public outside the Australian War Memorial during an official visit prior to the end of his military career in 2015.
Prince Harry proved himself to be quite the passionate Star Wars fan when he visited the set with his older brother William. The pair met the film's stars Daisy Ridley and John Boyega, marvelled over the new robot companion BB-8 and play fought with lightsabers.
Grumbling over being given the red lightsaber, which is used by villains in the movies, Harry said: "Why do I always have to be the baddy?" then said: "Come on, let's dance."
While visiting a school for Sky Sports TV show Game Changers, Harry joined in on the fun when children had to throw balls at targets with Harry's face printed on them.
Co-presenter Darren Campbell commented on how well Harry had done at the school, saying: "When you are doing a kids' TV show, the children know when somebody's fake and not there for the right reasons. They know Prince Harry was there for the right reasons. It will be a day those young people won't forget."
While playing five-a-side football on opposing teams during a visit to the Coach Core project at Gorbals Leisure Centre in Glasgow, Scotland, William and Harry showed their competitive streaks as they jokily attempted to block each other.
Harry joked around with the mascot of The Sharks rugby club during his official visit to South Africa in 2015, making it look like his head was in the shark's mouth!
Prince Harry couldn't resist taunting his older brother Prince William as they got up close with an eight foot-long python on their southern Africa tour in 2010. Their facial expressions were comedy gold as the snake was draped around their shoulders.
Harry's always been cheeky from a young age, as proven here when he stuck his tongue out during Trooping the Colour in 1988.