This is a photo of Geri Halliwell from the Spice Girls and her personal trainer walking a tiny dog in 2007:
This is a photoshopped version of that image where the trainer has 2x the amount of muscle:
Someone took that edited image and did an arm swap between Halliwell and her trainer, which resurfaces on the Internet every once in a while:
But the swapping goes way beyond that—for instance, someone took that arm swap and mixed in an even sillier head swap:
Another person went back and did a leg swap, which is less jarring until you spend awhile looking at it:
There was the inevitable Hulk edit, swapping human skin for the mutant green kind:
But probably the best versions of this image are the ones that have so many swaps that they are entirely too confusing to keep track of. This is when the Internet is something to be thankful for.
Shoutout to the Internet for making things like this all the time.