You will get a kick out of this - My son is 6 and last night we went out shopping for a Halloween costume for him and after many stores and many costumes we ended up getting a doctors costume.  My wife and I looked at each other when he tried it on and said this is it.

He is a pretty funny kid and he is in first grade and we live close to his school so we ride our bikes to school.  Well this morning while riding to school I jokingly said to him I should be a doctor also and trick and treat with you.  And he said daddy you're not cute - you won't get any candy.  I'm a kid and people think kids are cute - I will get all the candy.