A while ago, I read a post on Across the Universe wondering whether or not a person could say someone's eyes followed a person without the reader picturing a pair of disembodied eyeballs tailing an individual.
While it could be neither here nor there (and I personally don't picture the disembodied eyes), the idea intrigued me. And today I saw another such thing:
"Her lips smiled." From Un Coeur Simple. Can lips smile without a person causing them to do it? I'm not sure.