It's also traditional to put a tiny little baby Jesus figure somewhere inside the cake (after it's baked and before it's decorated, I think? but I could be wrong about that). If you get the piece of cake with the baby, you have certain "privileges and obligations." You might be the person who has to bring the cake to the next party. And also, you might be the Queen of the party.
The people, I got the baby.
I am enormously pleased, I must say.