twist someone around your little finger
twist (someone) around (one's) (little) finger
To gain complete control or dominance over someone; to make someone do whatever one wishes. The spoiled little brat has completely twisted his parents around his little finger. Everyone jealously accused her of twisting the boss around her finger.
twist someone around your little fingeror
wrap someone around your little finger
If you can twist someone around your little finger or wrap them around your little finger, you can make them do anything you want them to. Anna may not be the brightest person in the world, but she knew exactly how to twist him around her little finger. A child who is spoilt is able to wrap her parents around her little finger. Note: People sometimes use wind instead of twist or wrap, and round instead of around. I didn't think there was a man in the world you were afraid of, Christabel, or one you couldn't wind round your finger.