I get off to listening to the title of this post on youtube - particularly when the guy climaxes at around the 1 minute 35 mark. He sounds so into it.
I have the opposite problem. My wife will grind her pussy into my face. She will buck and grind when she cums and we are fucking. But she bites her lip, contorts her face, but makes no noise when she has an orgasm.
He sounds hot.