(NSFW) What is a good euphemism for watching "adult entertainment"?

A friend of mine is going out to a girls’ night tonight, and her boyfriend plans to stay home and watch porn. One of the topics of conversation at the girls’ night will almost certainly be, “what is your boyfriend doing tonight?”

There is a girl attending who will probably be offended by the mention of porn-watching. Instead of lying, I suggested that my friend use a euphemism, and the girl can believe whatever she wants to about the boyfriend’s activities.

I can’t think of a single euphemism for watching porn, so I wanted to turn this over to the collective: do you know of any existing euphemisms for watching porn, or can you come up with them? I guess masturbation euphemisms would work in a pinch, but ones for the actual watching of porn would be better.

Please note, my friend is not bothered by the boyfriend’s porn watching. They both frequently watch porn both separately and together. This question is not about whether porn is good or bad, and if you would like to discuss that please start a separate thread.