Meeting the Americans

I had seen the American mum (mom) and dad (pop) while taking Leilei to school on occasion but not had the opportunity to say hello. This morning I found myself walking behind the mom and her two eldest kids and shouted "Lao wei!" ("foreigner!") to them, almost without thinking I was one too. They are a very nice family with three kids, boy 9, girl 7 and girl 4. The husband was away on business, but I invited them for a meal tomorrow anyway.