Sinterklaas looks an awful lot like a thin Santa Claus. He's a jolly old man with a white beard and a red gown. Sure, he has a bishop's hat and staff and there's no Mrs. Sinterklaas, but he doesn't seem that different. But it's not just that he doesn't have a wife—Sinterklaas is celibate.That's not just a minor detail about Sinterklaas. There are holiday carols entirely about the fact that Sinterklaas is a virgin. Like the classic carol "Sinterklaas kapoentje" ("Sinterklaas, you castrated rooster!").This isn't some minor song. It's a huge part of the holiday. Remember that scene in Miracle on 34th Street where the little Dutch girl sings a Sinterklaas song to Santa? Well, that's the song she's singing—a beautiful melody about Sinterklaas being a castrated farm animal.The song's so old that nobody's completely sure why they're calling him a rooster, but it's almost certainly about his vow of chastity. Most people just try to avoid talking about it, and so the English version usually changes it to "Sinterklaas, little rascal." But that's not what it really means.For all we know, the song just might be literal. It just might be a glimpse into an old tradition lost in time. Maybe, instead of singing carols in a deep, jolly, tenor voice full of cheer, Sinterklaas just might sing castrato.