Share even

As the oldest child in the family, you should be considerate towards the younger and as the oldest you also often are expected to be the wisest. And siblings are to share even, right? I believe that what most children are taught by adults across the world. So far we haven't talked about the whole "share even" thing with Noah as it lays quite far into next year before he will need to start to share his toys with the baby. So guess my surprise when he this morning, when I'm getting dressed, looks at my breasts and says: "One for the baby and one for me"! It puzzles me a bit that this is one of the future scenarios that he has been contemplating in regards to getting a sibling - especially since he went on solids, by own preference at the age of only 4 months. I don't know what to say..boys will always be boys ;-)?