Where did these kids come from?

So one of my favorite customers was in last night. Why is he my favorite you ask? Well he is pleasant, nice, and is an amazing tipper! His only down fall is his kids. I can't even believe they came from him. He is very mild mannered, non boastful, and then he has these kids that always talk about how great they are and what great things they do. Don't get me wrong, they are nice, but they, especially the son wears me out with his constant jabbering. Anything I have done or talked about, he has done or know someone who has. So all of us bartenders ask the same question "where did these kids come from?"