Is he growing up or I am being small?

We both were washing our hands in bathroom; he looked at me and said Mom you look small now, I staggered and asked him how? He said it is because now my head is crossing your waist, it was not so when we were in India, so you are being small now. He means to say his growth is making me small. Kids do evaluation all the way, not only in toys and with other kids’ stuff. They notice entirety I can say.