They were muttering quietly between each other and watching him, though.
"What is it that thou art always muttering between thy teeth?"
After a moment she heard the other woman complying, and muttering to herself between soft moans.
"It is certainly old Icelandic," he muttered between his teeth.
The officer muttered between his teeth: "Before everything, let us settle this affair!"
Well, I must stick to that," you can hear him mutter between his teeth.
"Absolutely not a word of truth in it," I muttered between mouthfuls.
"Stop," he muttered between clenched teeth, "otherwise I won't be held responsible for what happens."
"This daughter of Satan spreads her nets," he muttered between his teeth.
"All this talk about lifetime achievement awards," he muttered between chords.