Two newly weds received two tickets for a popular stage play in town for the next day. The donor was anonymous but the couple thought that maybe the tickets were wedding presents from a family member who wanted to surprise them. So without much ado, they left their home the following day to watch the show. All their wedding gifts were still unopened in the living room.
As soon as they arrived home, they saw a large note outside their door saying, NOW YOU KNOW! All their wedding gifts were stolen by their ticket donor --a burglar!