A conversation with my 4-year-old daughter

Me: Aliza stop licking the chocolate from the Nutella jar.

Aliza: Why?

Me: It's not good for you.

Aliza: Why?

Me: You will have a cavity.

Aliza: Why?

Me: Sweet will create a cavity.

Aliza: Why?

Me: Because I have said so. 

Aliza: Why? 

Me: I don't know.

Aliza: Why?

Me: You tell me.

Aliza: I don't know.