The Mirror Shop is a building that is colored green and has a large light blue window that the mirrors can be seen from. Also, the words "Mirror Shop" are written on the window.
SpongeBob SquarePants and Patrick Star were brushing their teeth near a mirror at this mirror shop. When SpongeBob and Patrick were done brushing, they left a bunch of toothpaste spit at the bottom of the display window. Several bystanders got disgusted and puzzled by this.