It's the early version of the "why's":
"Where does __ come from?"
"What is __ for?"
"What does __ do?"
ALL. DAY. LONG.
I'm losing my mind.
I love this child, I do. I love his inquisitive nature, I do. I love that he wants to learn, I do.
But I don't know how to answer most of these questions! And they never end!!!
"Where does glass come from?"
"What do am-blee-ances [ambulances] do?"
"Where does water come from?"
"What is pee for?"
"Where does music come from?"
"What is shampoo for?"
"Where does midwife come from?"
"What do pillows do?"
"Where do eggs come from?"
With the way he insists on knowing where every last thing he eats comes from, he's going to be a vegetarian in no time.
"Where does God come from?"
Try - just try - explaining that to a two-year-old, twenty or so times over, when he will not be satisfied with any answer along the lines of "God has always been here".
No, he wants to know where God comes from.
Go ask your Dad, honey.