This is happening right now on and will definitely give you an end of day giggle. Kick-started by @ThePoke and now trending, #CelebrityGenderSwap, when done right, is a thing of wanton horror and hilarity. The idea is simple, as is the actual function. Simply find a celebrity duo, either a male/female couple or just two celebs papped together and swap their faces. It reads a lot less funny than it can be.  Exhibit A (courtesy of @Brandy_Snap) above. Exhibit B (courtesy of @cleverprime) below, if you can stomach it.