I have 2 suggestions, 1 is just ripping off what Tv Tropes currently has.
The other is:http://universoracionalista.org/wp-content/uploads/2013/05/invisible_pink_unicorn_by_dethklocalypse-d4gsh12.jpg
For the later I was thinking of this for the caption "We have faith that she is pink; we logically know that she is invisible because we can't see her."
Topic on Forum:Page Images
Unless TV Tropes has a better looking image, let's try the alternative and the quote you suggested.
This is the Tv Tropes one: http://static.tvtropes.org/pmwiki/pub/images/parody-religion_FSM_by_Nivao_5374.png the caption is "Touched by His noodly appendage"
The image is down and the link is dead I don't remember which IPU image was used. Anyone here remember?
The image is back up, and it's Michelangelo's "Creation of Adam" with the IPU instead of God.
I've saved a local copy in case it's needed.
Doesn't look up to me. Also I should have figured out the picture based on the description, but I didn't think of it.
I originally meant that it was back up at the source; I didn't realize it still needed to be re-uploaded here. Now done.