Having two young kids I have been to my share of kiddie birthday parties. Some are for the kids of my close friends while other invites come from my kids’ classmates. Whenever we gathered with our close friends to celebrate the birthdays of their lovely kids, my spouse would greet the mothers of the birthday girl or boy in a seemingly confusing way. Our friends are accustomed to it now, but at first it caused them a second or two of confusion. “Happy birth day,” he would say.