When they invite themelves over immediately or barge into my house unexpectedly. I have two rooms blocked off because I haven't decided what to do with them (in three years lol), so they just never leave. Poppy stayed about two hours last time she came over. I don't want to be rude and force them out (because I like getting gifts and building the friendship), but god it is so annoying. If they give me advance notice, I just move the bookshelves, let them see the empty rooms, strum the ukulele a few times, and out they go. But when they come over randomly...ughhhhh.