Just that really - looked out of the window earlier and there was a group of probable students having a chat on the pavement outside my house. Two were sat on the garden wall, which is very obviously the garden wall and right in front of the sitting room window (I wasn’t in the room at the time). It’s my wall for sure, and it’s 100+ years old (and will be very expensive to rebuilt when it does eventually crumble. I was planning to go out and water the flowers and gently move them on, but they left after about 15 minutes and before I finished sorting small children out. They didn’t actually do any harm, but AIBU to object to people randomly sitting on my wall?