I have a knack for picking up on accents when I converse with people. If I talk with an Aussie for five minutes, I can walk away and fool the next guy into thinking that I'm an Aussie, too. It's just something I can do, and, in fact, it's so automatic that I often don't notice that I'm doing it. My wife will tell me, "Stop that; they're gonna think you're mocking them and be offended." I ask, "Huh? Stop what?"
Well, I went to a resort in Mexico about 20 years ago and talked with people from all over the U.S. and a couple of foreign countries; all with varying accents. After a dozen conversations with a dozen different accents, I realized that I didn't know how to talk like myself, anymore.
...but I'm not the only one...
A centipede was happy quite,
Until a frog in fun
Said, "Pray, which leg comes after which?"
This raised her mind to such a pitch,
She lay distracted in the ditch,
Considering how to run.
I think that would be me...
My wife does that too. She stunned one of her nurses a couple days ago by pronouncing the nurse's (Indian) name perfectly. The nurse had not heard an American who could do it, but my wife rolled the R perfectly. The nurse made some comment, and my wife suddenly put on a broad Scots accent, with the Rs rolled just that way, and the nurse cracked up.