John and Carrie entered the shop and were immediately caught off guard by how big the building really was.
The building seemed to stretch on for miles containing every piece of technology that everyone in every universe had ever thought of.
"You look surprised." said a greeter that looked suspiciously like David Tennant."You're in Toon World!This building HAS to be bigger on the inside."
After a while of exploring the huge electronics store, The couple found the photography area.
The area had every photography device known to man, and all of the famous cameras from fiction and reality were in a very long display case lining the wall.(this area was at one of the buildings sides) after a while of looking at everything on display, John happened to glance behind him and saw what they came there for. He saw a large box-like structure that was marked "photo booth" and witnessed people walk in, and entirely different creatures come out.
John soon found a store helper who explained that in the photography booth, you could take a picture of yourself or anyone else and modify any of the bodies in the image to look like any living thing you could think of.
A quick and easy way to do this was to bring any piece of digital media in with you(as a character reference) after your photo was taken and select a character to replace any living thing in the photo as long as the thing being transformed was also in Toon World.
As a bonus, if someone else was modifying another copy of the photo at the same time,you would see the photograph change in real time, along with yourself if you were the part being changed. As a safety precaution, you can't erase anything from the photo if doing so would erase someone from existence.
After talking about it,John and Carrie decided that this is how they wanted to transform each other,so they took a picture together, copied it, and prepared to have a trans formative experience.