Congratulations Ma'am

Dave and I went down to Waikiki last weekend and as we were walking back to the car, a Japanese man bowed towards us and said, "Congratulations Ma'am".  Dave and I both looked at each other confused and then Dave looked behind us to see who he was talking to... except no one was behind us!!  We looked at each other realizing he was talking to me and we were both speechless.  I guess I ate too much at the Duke's breakfast buffet and I was showing more than I thought.  As Dave likes to say, I guess this little one is officially "sticking".