With this:
Says volumes about what he has between his big ears.
I don’t think Diana liked doing it with him, Camilla seems to. Poor guy lives in a fishbowl, he can’t get laid without the Grauniad and Mirror splashing it all about.
The look on her face looks like Charles a little too active down there.
He probably couldn’t “keep up” with Diana and went for the older, slower, more easily pleased model.