Is that self-application, or did this kid manage to persuade an adult to do this? The Eliot Spitzer-style socks really bring it home.
Australian artist Emma Hack has a very cool series of naked people painted so that they blend into the wallpaper. Probably not a great decorating idea unless you know people who are willing to stand completely still for long periods of time, but it makes for some very striking (and somewhat NSFW) pictures.