The creative team of Gene Weingarten, Dan Weingarten, and David Clark present an interesting concept in the February 8, 2014 sequence of their strip, Barney & Clyde. (click on image to enlarge)
The strip occasionally has cameos from other comics (see: Meta Barney & Clyde). And now we know why -- those other strips aren't just on a different part of the newspaper. They're in alternate universes! It explains so much. Thanks, guys, for being so mindblowingly meta.