When we look back on another age, we tend to skip to the highlights. That goes double for things like art, sports, literature, and music. But in our own time, we recognize that by divine fiat 90% of all cultural production will be trash ... and a smaller percentage of that trash may be all the more enjoyable for it. In other words, I'm talking about guilty pleasures. The kind of plebeian, oddball entertainment that gets you looked down on by your peers. It might be relaxing or titillating, but never edifying.
Did the high middle ages (approx 1066-1300) have anything like that?
Now I'd like to make two caveats.
First, I don't just mean pornography. This question is only a bit about the illicit. What I'm really after is the childish, the weird, the base, or the just plain stupid; the kind of thing we know medievals looked down upon, but still liked anyway. So the pornographic certainly isn't excluded from the question, but it's not really the main point.
Second, I'm not just asking about class differences in cultural consumption, unless those differences are seen in a very dim light by one party (edit: or rather, if it's generally considered in bad taste). So a peasant ballgame or tavern song doesn't count on its own unless the higher classes look down on it, even if some are also secretly into it, despite a strong informal taboo. (As in Prince Hal carousing with Falstaff and his riff-raff.)
So to sum up, sex and class are an important part of this, but not the determining factor.