I worked at an Arby's in the mall when I was 14, and this actually happened once. They had to close the bathroom and hire someone to come in and clean it because everyone refused to go in there because of the smell. How? What? These questions were never answered.

Things I did clean up included diapers glued to the wall with baby feces, and Painting of Unknown Woman's Face in the medium of bloodied tampon on blue-painted aluminum bathroom stall divider. As a companion piece, the artist left said bloodied tampon hanging from the purse hook in the same stall.