People look at you like you're a celebrity or alien...you're not really sure which is more accurate
People ask you where you're actually from
This thought goes through your head--"Am I actually fat? Have I been living a lie?!" (maybe this is a girl thing)
People are fearful you don't understand Japanese so they either:
When trying to decide where to eat, people ask you if you're ok eating Japanese food
People are amazed at your ability to speak any Japanese (especially true the less Japanese you look)
When they find out you're from America, it's like they're awestruck
Everyone is SO nice to you
And you realize how truly awesome it is to be an American in Japan