I don't know anything about lizard people, but I'll tell you one of the most legitimately terrifying facts there is out there to discover.
Aligator's penises are hidden and always erect. They have a set of mucles that just causes them to pop out of their body.
So before you start messing around trying to expose the lizard people, know that you're playing a very dangerous game.
Source:
https://www.youtube.com/watch?v=3ED_exG3qLk