Will these grow?

You just never know what goes through the mind of a child. Today Bo woke up from his nap and came to ask for a snack. As I was getting it for him, he lifts up his shirt, points to his ..(sorry, can't say the word) and says "Are these gonna grow on me?" I told him "no" with a puzzled tone in my voice. Then he says "Brooklyn's are." Yikes! I hadn't noticed that, but maybe I will have to check. I assured him that his wouldn't and he walked off eating his fruit rollup. Beautiful.