anatomy lessons

So my little guy spent the entire night screaming for apparently some unknown reason. I got up with him at 5:15 am and gave him some milk and let him run around for an hour. At about 6:30 it was back to bed for him just in time for my big guy to get up. Which was a hour earlier than usual. So needless to say I was a little tired this morning. After laying around while Peter Pan played and entertained big man I got up to shower. O was downstairs and E was in bed. I got out just in time to see O climbing the stairs so I told him to come in my room so he wouldnt wake up his brother. I of course had just got out of the shower and only had on a towel. I have gotten dressed in front of O hundreds of times but have been trying to do so less and less now that he has learned body parts. So as I am trying to get my clothes on he looks at me and say "boobs" I very politely tried to ignore him and change the subject. He then said "mommy big boobs" needless to say I dressed in a hurry and got out of the room. What do you do......................