Not All Brothers and Sisters Think Alike As twins, Bobby and Chrissy also don't quite look alike. They share a lot of things, including their birthday. Having the same birthday sometimes means sharing a birthday cake. Even worse this year, they may have to share their birthday gift. The gift Chrissy has in mind isn't Bobby's idea of fun. Two kids, one birthday, one cake and one gift. What kind of gift will they get? And will they like it? Some "gifts" aren't always what you expect. Some "things" aren't always what they seem.