Welcome to the club, you're in good company. There'll be a couple of tests for you here: -
Telling the genuine pics from the fakes.
Knowing where the real pics came from, and possibly having the unadulterated versions available for comparision.
Spot who's using someone else's pics.
Know who the real owners of those cocks are.
If you enjoy playing that game then you'll have a lot of fun here!
cheers
Dillon