There's no benefit to telling anyone about RPing as far as I'm concerned. I can count on one hand the IRL people who I've had to explain roleplaying to and every time it's just a pain in the ass. Half the time, their immediate response is "Oh, so you're into kinky shit huh?" and then you have to talk them down from that. Better to just let the plebs play their Cawladoody and Madden 20XX.