Definition & Meaning of "[knock|blow] {one's} socks off"

What is the origin of the idiom "knock one's socks off" and when to use it?

The idiom "knock one's socks off" is believed to have originated in the early 20th century. It is thought to have its roots in the world of boxing. In a boxing match, a powerful punch delivered with force can be so strong that it knocks the opponent's socks off their feet. Over time, the expression evolved to have a broader meaning of being highly impressed, amazed, or astounded by something or someone.astonishment, delight, or amazement.