Ways to recognize fake photos

Do you have any tips for verifying a photo is fake? Comparing the photo with others helps, as does enlarging it. Someone should invent a software that scans pixels and determines that the photo has not been digitally modified (morphed) or assembled like a Frankenstein monster.

I just realized (I'm slow sometimes) that "Celebrity Endowments" does not exclude cocks that are not large, even though this is LPSG. Ideally this section is meant to determine which celebrities have large cocks, but we have to consider and speculate on all male celebrities, and most do not have large dicks. So it's necessary to leave the celebrities with average endowments on the site as evidence and for future reference.