Eewww what kind of person would kiss someone else's baby on the lips!!?
No way. There are a few things that I don't even bother with tact about. Someone else kissing my baby on the lips!? Oh no.. I would have zero problem with stopping them before they got there and saying. Whoa!! Not the lips gramma. I'd say it in a humorous way but they would know I wasn't joking.
No way. Eew