What's the weirdest thing that you've seen at someone's hous

What's the weirdest thing that you've seen at someone's house that they thought was completely normal?

When i was younger I had a friend who I always visited and all of her parents sofa's and chairs were covered in clear plastic. It would bother me so much having to sit on her plastic covered couch because it was so hard and uncomfortable, not to mention really sticky when it was summer. I get that her parents probably didn't want to get the couches dirty, especially having kids around but I thought it was one of the most tackiest things even as a child.