Parenting 101 v13 - Birthdays and Monsters

When I am confronted with a difficult parenting situation, I'll put the issue out there to plumb the depths of the vast parenting knowledge of my beloved readers....Here is our thirteenth edition of Parenting 101.
__________________________



Today is a special day! Well actually tomorrow is, but today is Lukas and Sylas' birthday party!! Woohoo! As posted in the Markham Economist & Sun tomorrow is Lukas' 6th birthday and Sylas' 4th. It's fun having boys that share the same birthday cause we just have one big fun party.

Aside from the birthday excitement Sylas asked me a question today that I needed a little help with. We were walking back from the park when Sylas said:

Daddy, why don't Monsters have hearts?

I couldn't think of a real good answer. Any ideas?