Boards
look at your bathroom pullstring
look at how dirty it is. Look at the contrast between the fresh whiteness at the top and the grimy blackness at the bottom, the part where you grasp your dirty fingers day after day. Think about the endless stream of grottiness that has afflicted that poor pullstring, every time you touch it. Does it make you proud. DOES IT?
well it should. That sort of build up of muck doesn't come easy. Enjoy it mate, you deserve it