Andy Cohen and Ralph Fiennes debate over expression in popular children's book Corduroy: 'It feels weird to me!'

He is well-known for having extended conversations with various celebrities on his talk show, Watch What Happens Live!

And on Friday, Andy Cohen showed that he was able to connect with his guests on a more personal level when he shared several videos with actor Ralph Fiennes to his Instagram Story.

The 53-year-old media personality and the 59-year-old actor bonded over the expressions in the popular children's book Corduroy, and the performer graciously explained one of them for the show host.

At the beginning of the clips, Cohen noted that he had pointed out a specific phrase from the book that had confused several of his fans. 

He stated: 'I've got a lot of feedback from a lot of people saying oh, it must be an English expression, like from the UK, "going his rounds."'

The show host then expressed that 'only one person that can solve this, master of the English language,' before introducing Fiennes, whom he described as a lord.

When the actor pointed out that he was not, in fact, a lord, Cohen quickly remarked that 'you should be.'

The performer then read the page that contained the phrase and concluded that it would generally not be used in his home country. 

Fiennes specifically stated: 'I don't believe we would say that in England...it feels weird to me.'

Cohen excitedly said that he and his friend had figured out that the phrase was unlikely to be used in Great Britain.

He remarked that 'we solved it, this is not some highfalutin English term, Lord Voldemort, thank you.'

When Fiennes made a suspicious-looking face for the camera, the talk show host instantly stated: 'Oh no, I said his name.' 

Cohen became aware of the line when he took a poll about the phrase's origin after reading the book to his son, Benjamin.

The reality television personality initially announced that he was going to become a father during a 2018 episode of Watch What Happens Live!

He later confirmed that he would be welcoming a son while hosting a New Year's Eve special that same year.

Benjamin Allen was later born with the assistance of a surrogate the following year.

Cohen's son has since made numerous appearances on his father's Instagram account in the years since his birth.