pull one’s leg

(verb) to tease someone, to deceive someone in a friendly way

Example Sentences:

The students decided to pull the teacher’s leg by telling him that they wanted to have a test.

A: Did you hear that Britney Spears is pregnant again?
B: What? Really?
A: No, I’m just pulling your leg.

Boyfriend: Hi honey!
Girlfriend: I’m pregnant.
Boyfriend: Are you pulling my leg?
Girlfriend: No. Let’s get married.

Media:

Similar idioms:

1. break a leg
2. cost an arm and a leg
3. bring something out into the open
4. hard to swallow
5. beside oneself
6. April fool’s!
7. pull through
8. on pins and needles