Meaning/Usage: Used when asking someone to be serious 当要求某人严肃时使用

Explanation: "Joke" is defined as something that is said to cause amusement. In this phrase, the person does not find it funny because that person is involved in some way. So they can ask the person to be serious using this phrase.

"He told me she likes me but I said don't joke with me."
"My sister told me I was in trouble and I told her don't joke with me."
"He said I had won a million dollars and I said don't joke with me!"

A. "I heard that Dave asked the new girl at work out on a date."
B. "Don't joke with me! You know I really like her."

Other Common Sentences

"Stop messing around."
"Please be serious."