He likes talking about his private parts and what he does to it in public. He seems to really get off on it.
I think he's also so narcisstic and disconnected from other people that he doesn't realize they're not interested. If he's thinking about his dick, then of course other people want to hear about it. If he's obsessed with how it's all Watchtower's fault that he's messed up, then of course complete strangers are hanging on his every word about it.
He really, truly doesn't understand that other people don't care and that there's a huge world out there where people aren't always thinking about sex and aren't fascinated with all things JW.
It also speaks volumes to how he hasn't grown as a person after leaving WT. He can't make jokes about work, social media, celebrities, life experiences, etc. because he's still living in his weird little bubble. His crack about women leading him on was also bizarre in a room with women present. Doesn't occur to him that maybe they wouldn't appreciate that insulting stereotype? Just a narcissist, through and through.