Mmmmmmmmm, children

Today I saw a woman kissing her three year old daughter on the T. Now I know some families peck on the lips, and even though in my family pecks on the lips exist only between Mother and Father, and only when Father is going away on an extended trip, I don't find the practice of kissing one's child any sort of weird. Except....for this situation. This was not a brief peck. This kiss LINGERED. For like, a good two and a half minutes. And the mothers lips were clearly and visibly moving. And I did NOT know what I was observing. Maybe I'm just an old-fashioned prude.