Jfc is deffo proud of his Wang, and wishes to share it with the world. He has mentioned in several videos, that he is muscular and has a big dick, but nobody knows because he is so socially awkward due to anxiety and Asperger's.
I got the feeling in the pickle panties video that he felt he had finally found a way to expose his wang to the world without breaking any rules. He is clearly impressed by his own junk, and was also clearly excited by the chance to show it off.
But he imho had no clue that what he was doing was not ok.
I don't think he got off on the deviancy of it. I think he was happy he found a way he thought was acceptable to peackock his parts. He probably we women would flock in droves.