Ant McPartlin and Declan Donnelly left fans in hysterics as they parodied the Australian twins who went viral for speaking in perfect unison.

In the new clip, Ant and Dec, both 49, watched twin sisters Bridgette and Paula Powers, 47, speak in unison during their live TV interview. 

The pair then playfully mocked the twins by speaking in unison themselves, leaving fans in hysterics. 

Kicking off the video, Ant asked Dec: 'What are you watching?' 

The pair then hilariously started speaking in sync, saying: 'Ahh it's those Australian twins that talk at the same time. 

'I saw this, weird, isn't it? Imagine talking at the same time as someone else and saying exactly the same things, how do they do that?

'I can't imagine what it must be like. The weirdest part is, I don't even think they know they're doing it, bless them. 

'Cuppa tea? ooo yeah go on then, biccy? You read my mind.' 

Sharing the post on their joint Instagram account, the duo captioned the hilarious clip: 'The Australian twins have nothing on us...' 

Within less than a day, the video gained more than 40,000 likes and fans flocked to the comment section to express their joy, with one even jokingly comparing the pair to the Chuckle Brothers. 

One fan wrote: 'This is why they win all the awards' followed by several laughing emojis. 

'Giving off chuckle vision vibes (laughing emojis)'; On point. wonder how many takes it took.'; 

Celeb pal Marvin Humes also commented with clapping hands and rolling on the floor laughing emoji.

Meanwhile, Adam Thomas commented several laughing emojis. 

Ant and Dec were mimicking the moment the twins gave an interview recounting  the terrifying moment their mother came face-to-face with an alleged gunman. 

The bizarre interview saw the twins give an identical, word-for-word explanation at the exact same time.

The alleged gunman is alleged to have caused a crash on the Bruce Highway in Queensland that killed a woman, then shot a Good Samaritan in the arm while on a carjacking spree as he fled the crash scene.

Twins Bridgette and Paula witnessed the chaos firsthand, and their surreal interview - where they answered a journalist's questions in unison - quickly went viral. 

The pair described how their mother, who had rushed to help a crash victim, suddenly found herself confronting the alleged gunman emerging from the wreckage.

'And one guy, he was up there with our mum… he goes, "run, he's got a gun",' one sister said, while the other mimicked her speech exactly, word for word.

'And our heart started to pound. And I said, "Oh, mum, where's mum?" - and poor mum was stuck up there.

'She goes, "Are you alright?" because he had all blood all over his face and he goes, "I'll shoot you".'

In a split-second decision, their mum distracted the alleged gunman and bolted into the surrounding bushland. 

'Mum was distracting him to make him look the other way and he looked the other way and Mum ran into the bush behind the fence and the guy goes, "I'll find you and I'll shoot you".'

Thankfully, the twins and their mother were able to escape the chaos safely.

Their interview made headlines around the world, with US media and politics news website Mediaite describing their perfectly in unison recount as 'surreal'.