Sinterklaas

Yesterday evening, Sinterklaas paid our family a visit. Alle our cousins, nieces and nephews were present and we had a great time.
DH was called to Sinterklaas; because he learned son #1 a dirty Sinterklaas song, so he was naughty...
All the kids got great presents and the ones they wanted, how does Sinterklaas knows what they want???? Son#3 was so excited that after he spoke to Sinterklaas, he fell asleep in Opa´s lap.