I used to have my own bathroom in my parent's house. Ever since Shaelynn moved out my sophomore year of high school, I basically had the entire basement, and 2nd floor bathroom to myself. Katie slept upstairs, but used my parent's bathroom, because she was still too young to do most things on her own.
This is what apparently happened, though, when Shaelynn ended up moving back to my parent's, and her and Katie got an idea (I think Shae got an idea, and Katie followed suit).
Now, whenever I stay at my parent's, I use their guest bedroom (which was my bedroom originally, before I moved to the basement). What's right outside that room? This hideous mess.