Pediasure Ponder

My sister gave one of my nephews a Pediasure.  After he finished it he asked for another one, she obliged.  After finishing the second Pediasure, he asked her for another.  She told him he may not have a third and he is welcome to water or milk.  He demanded the Pediasure informing my sister that it is good for him because is has vitamins.  My sister told him too many vitamins are not good for his little body.  My nephew stood there thinking for a minute and said, 'If I have too many vitamins will I look like Michael Jackson?'