This morning when I was nursing Gideon I was singing some kind of diddy like I normally do, making it up as I go. Then, without looking at me or missing a beat with nursing, Gideon's hand slowly and gently reached up. He placed his fingers above my top lip, and his thumb below my bottom one. He firmly pinched my mouth shut and held it that way for a few seconds. Then slowly and gently, he let go and his hand came to rest once again on my shirt collar.
I got the hint.