Cheese Nipples

We just recently got back from the beach- we went with some friends and had a blast. For those of you who know Mason you know that he's not all that excited about doing anything remotely scary. By the end of the trip he was in the water with his floaties (which is HUGE) and we got him in swim lessons the week we got back which he loved. I never thought I would see the day.
Got one story..
So we were up in his room the other day getting dressed and while checking out his own chest, he asked.. "Mommy, does Daddy have boobies?" In the back of my head I was thinking "if your daddy had boobies he would never leave his room", but instead I responded with "No, only mommies have boobies". He then pointed at his chest and said, "Yes he does.. he has these.. what are they called?" to which I responded "those are called nipples." Looking back at me like a light went off in his head he said "OOOhhh... just like a mouse nipples on cheese." I can't make this stuff up...