pull someone's chain
Make someone speak out of turn, as in Who pulled your chain?It's none of your business. [1920s]
Make someone angry, especially deliberately, as in Teenagers really know how to pull their parents' chains. [c. 1960] Both usages allude to the literal sense of chain-pulling, that is, "causing someone to do something, as though activated by a chain."
|a fool or simpleton; ninny.|
|the offspring of a zebra and a donkey.|