Definition & Meaning of "pull one's leg"

What is the origin of the idiom "pull one's leg" and when to use it?

The exact origin of the idiom "pull one's leg" is not well-documented, but it likely originated in the United Kingdom in the late 19th century. The phrase was first used to describe someone joking or teasing another person in a playful or humorous way. The idea behind the expression is that when you pull someone's leg, you are metaphorically playing a light-hearted trick on them, much like a prank or a jest. This expression is used to imply that someone is teasing or joking with another person, often in a good-natured and playful manner. It is a way to suggest that what has been said may not be entirely truthful or that it is meant to be taken with a grain of salt. It is commonly used in informal conversations to lighten the mood or to acknowledge humor.