It's also considered embarrassing to be walked in on taking a shit. To me, that doesn't imply that mainstream society holds shitting as shameful or immoral, in fact just the opposite.
I would assume most religions do condemn porn but mainstream US society is not religious.
Mainstream US society is fairly accepting of porn. The fact that it's joked about is basically evidence of this. Nobody jokes about e.g. getting caught fucking children, which IS condemned by mainstream US society.
The point is anytime somebody talks about having a problem with porn, there is some kneejerk reaction about how he is just confused by an unenlightened puritanical society, as if he is incapable of deciding for himself whether or not porn is negatively affecting his own life.
I don't believe, nor anyone else I hope, that the prevalence of jokes are a statistical tell about the true societal gauge of what is moral and immoral. Jokes are made about pedophilia (http://www.youtube.com/watch?v=4KyMhpzNNlM), jokes are made about bacon (http://www.youtube.com/watch?v=CaK9bjLy3v4), let me know if I'm wrong, but those seem separate from each other on the spectrum of "no-no's." Citing how comedians feel about something is not great in the way of proving a point about how the majority see that thing.
I would assume most religions do condemn porn but mainstream US society is not religious.
Mainstream US society is fairly accepting of porn. The fact that it's joked about is basically evidence of this. Nobody jokes about e.g. getting caught fucking children, which IS condemned by mainstream US society.
The point is anytime somebody talks about having a problem with porn, there is some kneejerk reaction about how he is just confused by an unenlightened puritanical society, as if he is incapable of deciding for himself whether or not porn is negatively affecting his own life.