The "family", as in the regular cast and crew were probably used to it, the cast and crew that only were for like an one episode thing, not so much. I remember a post from a crew person who was on a set working and about how annoying the actors were always ruining scenes to pull pranks and make bloopers, which makes shooting take much longer, and without the poster even saying what show it was, everyone knew it was supernatural.
It's like those inside jokes you have with friends that they're used to it so it doesn't bother them, but their significant other or a friend from the outside the group might feel uncomfortable hearing it