This comic is from 1965, but showed up today at GoComics recycling of old B.C. comics. There are a lot of possibilities related to Janus being two faced, but do any of them come together as a gag?
Kenneth Berkun sends this one in. Seems to be missing something, but missing things is what CIDU is all about.
If he’s referring to the light coming from the phone’s screen, there’s no way it could create that pattern (even assuming, for the sake of the comic, it could actually cause a burn).