I've palpated the chest wall many times, but never the lungs themselves - patients tend to get cranky when you shove your hand through their chest and directly into their lungs.
I've also percussed the lungs many times. So, unless he's palpating the chest wall, don't know what he's up to....
Paul got the hammertoe one just fine.
"Cogwheeling" is a term that I've used most often in describing a phenomenon in Parkinson's patients and also a side-effect of some anti-psychotics. They loose smooth range of motion in some of their joints - particularly their wrists - and when you (or they) try to move them in a smooth motion, they catch, then move, then catch then move...kind of like they are catching in the individual little dips in a cogwheel as they're trying to move in a circle. (I don't know if that's a clear way of describing it - it's easier for me to demonstrate).
And then "cobblestoning" I've seen most often used in describing a colonoscopy in Crohn's disease patients - the colon is patchily involved and you have clear areas of normal mucosa and then areas of involved, thickened white and/or bleeding mucosa that ends up giving a topography that looks like a cobblestoned street.
Hope those were helpful,
Jill