You are obviously not comfortable with this caveman slapping you......so stay away from this crap. Put it in your contract. limits keep healthy atmospheres to things. In what other work environment do you see men slapping, whether hard or not the disrespect is there, a working colleague? Domination can be a game for two, but when only one is having fun (you aren't) it's just not healthy, porn or no porn. Normal people do not get pleasure from this and this is the type of violence you and many others fight against. Now that you are relevant in your business, do more than just go along with that unclassy porn. I wish you success in your career.