" up’ is from when a bird has eaten too much of his kill and doesn’t want to hunt or do anything for a while,” she said. “And ‘under my thumb’ and ‘wrapped around his little finger’ are from holding a falcon tight to your fist by its jesses so it can’t fly. Those terms were in Shakespeare’s plays and until then they weren’t common usage. "

― C.J. Box , The Disappeared (Joe Pickett #18)