Why I may come home with an English accent

Over fish and chips at a marina in Cowes last night a single word spoken by either an American or Englishman (I don't recall which) invariably led to an explanation of the meaning of the word and how it's pronounced.  The crew is made up of three Americans and three Englishmen.  In just a few days, I am already finding myself saying, "yeah, yeah" in agreement or as a response that means a polite "ok or "got it" (which sounds much more glamorous with a British accent) and the English are saying words like "cool" and "awesome".  The captain said, "I wonder if at the end of this I'll be more American or you guys will be more British."  We all laughed.