yank (one's) chain
To tease one, often by trying to convince them of something that isn't true. Quit yanking my chain, I know there isn't a Hollywood director calling me right now. I love yanking my sister's chain—it's almost too easy to fool her.
yank someone's chain
Sl. to harass someone; to give someone a hard time. (As if one were a dog wearing a choker collar, on a leash.) Stop yanking my chain! Do you really think you can just yank my chain whenever you want?
yank somebody’s ˈchain
(American English, informal) tell somebody something which is not true, as a joke: Did you mean what you said, or were you just yanking my chain? Yank means pull something hard, quickly and suddenly.