Where did that blond hair come from?

I don't know maybe the mailman? This by far is one of the worst questions I hear quite often. My son has what I consider a dirty blond hair color. I had even blonder hair when I was his age! Obviously it came from me, but it is so insulting when people ask where it comes from. I want to say sometimes well, you know the mailman is really his daddy! However, I usually bite my tongue but a funny thing happened a few weeks ago that would surely make everyone wonder.

I was in the Kitchen letting the dog out our back door and just as I opened the door the mailman was getting out of his van and shutting the door. Lil Gary was standing far enough in the kitchen so he couldn't see who was slamming a door shut. He became so excited by it that he came running the length of the kitchen yelling Daddy's Home Daddy's Home! It was in fact not his dad but the mailman. I immediately thought of people who ask me about his hair and then the neighbors hearing him yell this and how funny it probably seemed. I even think the mailman heard him and I was just laughing too hard to care. What adds to the funny of this is that our dog Bitsy Bleu is totally in love with the mailman as well. He brings her treats and comes to see her when she is outside! If she is inside she will basically whine at the door for him as he walks up our mail! Our cute little family! I love it! I of course had to tell Big Daddy about it and now we have this joke all the time about the mailman being Gary's daddy! My Big Daddy knows he is his 100%