Okay, so, you know how there are those porn pictures which have little inset picture-in-picture things of different angles?

Well, okay, so, you see, if it's cub porn you're drawing, naturally the guy's got his pants off and on the floor. And his wallet might be falling out of the pocket. So instead of just doing inset views of a closeup of the cock going into the butt, an internal shot, etc., also do one that's a closeup of the driver's license, conveniently sticking out of the wallet, with a photo, and a date of birth from 18 years ago.

Problem solved.