The U.S. funnywoman, who voices the blue tang fish Dory in the oceanic animated adventure, believes the new movie is such a tearjerker that audiences will be unable to avoid crying.

And she says that those who don't feel themselves welling up when watching Finding Dory, which is the sequel to the 2003 Pixar blockbuster Finding Nemo, are lacking in feeling.

"Men are crying and they're embarrassed," she tells the BBC. "I say that if you don't cry at this film then you should see a doctor and see what's wrong with you, because you're a heartless, emotionless person that's a threat to society."

An indignant Ellen continues, "How can you not cry at this film? It's the sweetest, it's amazing but it's also very funny and very clever."

U.S. audiences certainly seem to be enjoying the film, which follows Dory's struggle to find her family by overcoming her poor memory, as since it opened there last month (Jun16), the Disney/Pixar animation has made $460 million (£350.3 million) at the North American box office.

And Ellen puts the film's success down to its sentimental content, saying, "I think that it's great that it's emotional because it's about searching for home, and home can mean different things, and family can mean different things. It doesn't necessarily mean a mother and a father, it doesn't necessarily mean blood relative, it means who gets you."

In the 13 years since Finding Nemo was released to universal acclaim, the comedienne and talk show host has admitted that she grew ever more desperate to see a follow-up made.

"I knew I wanted a sequel (to Finding Nemo) because I saw every other movie (get a sequel), you know in the 13 years since I've been doing my show there's been Cars 2 and Shrek 2, Monsters Inc," she explains. "There were so many different things that were coming out during that 13 years I'm like this is ridiculous, so I was making a joke about it forever on my show."

Finally, after more than a decade Ellen has got her wish, with her character taking over from the clownfish Marlin and Nemo as the main focus of the franchise.

After its stellar North American opening, Finding Dory is set to storm the U.K. box office when it opens in British cinemas on Friday (29Jul16)