I was born in Virginia and moved to Ohio in second grade. I had a southern accent and so did everyone else that I was used to being around.
I thought flyswatter was flasswater. I didn't realize the word fly was in that word. I thought of it as any other word like chair or whatever.
It hit me like a bolt of lightening one day and from then on out I tried to lose my accent and speak like the people around me.
BTW - I love southern accents and pick it right back up when I hear one even if I am only talking to my cousin on the phone.
Sho' 'nuff do.