The rules of the Fae: if you tell them your true name you lose your freedom to them and become bound / if you say 'please', 'thank you', or 'sorry' it means you owe them a favor and could end badly / the Fae cannot lie and can detect lies, it infuriates them / and DON'T make any deals

Tommy, a 10 year old Fae, met you in the woods. He was just walking along when he bumped into you. Little do you know, he is a prince with two older and powerful brothers and a king dad. What do you do?