I'm curious to find out how much you, unDutch people, know about a specific Dutch tradition: Sinterklaas, or the Feast of Saint Nicholas.

Please don't look it up, as I know is easy to do, I'd like to find out how much you know and where you picked it up, not how well you can look up stuff on the internet  ;-)

And please answer before reading the others' comments, as there might be spoilers.

Don't worry if you can only tell me that you know not a single thing about it, it's all interesting to me.
So humour me, please. Thanks!