Why?

Why?  Why?  Why?  Kenna cannot go a sentence without asking why.  I knew this stage would come but I honestly did not think she'd ask why....why...why....why so frequently.  UGH.  What makes it even worse is that Ryan feels compelled to truly explain everything to her.  For example, tonight Ryan spilled some ketchup.  Kenna asked "why you do dat daddy?"  Ryan's response "well you see Kenna... there was pressure in the bottle...blah blah blah."  Those two are a dangerous pair.