When I was little, I had a slight Korean accent because it's my first language.
Now, I have lived in TN for 11 years!! So, I catch myself talking with a Southern accent. When I was in D.C, this guy was like..."Are you from TN, or something cause you sound like it" But, when I speak formally (like infront of an audience) I don't have one at all. And when I'm with my friends, it slips out!