I often hear people say things like :
"You don't like me using your telephone."
or
"You don't like me telling your age."

I was taught to use "my" in those instances, so I do, but have forgotten why. Or am I just being persnickety?

And then there are those pesky "Lying in the gutter I found my purse," things. Some can be quite hilarious but what are they called? And do you remember any from your English classes?
wow