When he returned he spoke in a faux upper class British accent. It was very, very awkward.
Some celebrities have done the same thing.
Madonna was one of the most famous phonies, but there are others.
I used to find accents very contagious, I’d start picking them up in just a couple of hours. Then I worked for a company where the CEO was from Mexico, took about 3 months of fighting the urge to make it go away.