I was always taught growing up that asking that is rude! I still make a conscious effort not to do it straight off. It's a bit of a lazy conversation opener and

I was always taught growing up that asking that is rude! I still make a conscious effort not to do it straight off. It's a bit of a lazy conversation opener and with a bit more imagination (e.g. based on something interesting/strange that is happening in the moment) I often get better conversations. Or maybe people just think I'm weird