Tic-tac-toe is about crosses fighting circles. Cross is a Christian symbol. Circle is a Jewish symbol. Jews hate crosses and used circles instead. Because of this they are called kikes.
I've played it in school, but never bothered to find out about the origins.
>Games played on three-in-a-row boards can be traced back to ancient Egypt, where such game boards have been found on roofing tiles dating from around 1300 BC.