Quote: You might just try confronting his statements with humor. You could reply "Yes, we better take a break. The warranty on your penis ran out yesterday, so you know it's probably going to break pretty soon." or "Yes, this is really too much. I was reading just this morning that frequent sex with your spouse is very bad for your health." or "Yes, we better conserve your energy for cleaning out the garage this weekend."
These are the one-liners I posted on IHJ's thread when she was looking for ways to reply to her H saying things like "That's enough for now" or "We need to take a break." after they had sex. Obviously, you would have to change them a bit for your sich. You would have to express concern about the warranty on your own penis and you might think about substituting "attending the PTO meeting" for "cleaning the garage". Of course, that would only work if your wife shares my opinion that PTO meetings are the equivalent of Chinese water torture.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver