And God made nipples

My darling, in quisitive, incredibly bright 6 1/2 year old son was out helping Dad mow the yard on Sunday afternoon. Shirtless, of course, as all boys and men do during the summer months. After the yard work was done, two very filthy beings somewhat resembling my husband and son came in to shower. Some time later, my husband emerges and is just bursting to tell me about his conversation with Cole (said son) while they were cleaning up.
Cole: Dad why do you have nipples?
Dad: what!?
Cole: Why do boys have nipples?
Dad: God made us that way.
Cole: Yeah, but I know why Moms have nipples, it's where they feed the babies, but why do boys have nipples if they don't feed babies?
Dad: uh....God made us that way. I dunno.
Cole: Well, can we ask God?
Dad: Ask God why we have nipples?!?
Cole: yeah.
Dad: uh.......
Cole: I think we should pray about it.
Dad: pray about nipples.
Cole: yeah.
Dad: uh....you want me to help you pray to God and ask him why we have nipples.
Cole: YES.
Dad: silence.
Clearly, from my perspective, if that were me in that conversation we would have been on our knees talking to God about boys' nipples and their purpose. However, Dad is completely flabbergasted. I suppose now as a good Mother would do, I will google mammals and nipples and come up with a very interesting "all things have nipples" lesson for my inquisitive, bright, always-wanting-to-learn son. I wonder what next weeks' lesson will be?