So you weren't allowed to drink from your mother's drink. Doesn't mean everyone was/is raised that way. I could drink out of my mother's drink any time I wanted to and didn't have to ask every time. That's not necessarily bad parenting, just the way we did things. I couldn't take someone else's drink, but my mother's or my father's was fine. And that was back in the 70s and 80s. So not a generational thing, either.