I live in Australia, and I went back to Jordan for a holiday. I went to a barber's shop and as usual in there was a conversation between me and the barber.
All of a sudden he told me you don't live here, you must be from a foreign country. I was shocked because I did not say anything about that.
I told him yes, but how did you know?
He said when you were thinking you filled the pause with "mmmmmmmm" while in Jordan we fill it with "aaaaaaaaa"
Is it true that "mmmmmmm" is the English way of filling a pause? Is there another letter to fill the pause with beside "mmmm" and "aaaaa"?