Is it an idiom to lean forward and back together?

It is an idiom to lean forward and merge behind the back.

Basic definition

The body rocks back and forth. Describes the appearance of laughing or being so sleepy that one cannot stand straight up.

Detailed explanation

The body rocks back and forth. Describes the appearance of laughing or being so sleepy that one cannot stand straight up. Example: After everyone heard this, they laughed even more. ◎Chapter 42 of "A Dream of Red Mansions" by Cao Xueqin of the Qing Dynasty

Source

Chapter 40 of "Cihua on the Plum Blossom in the Jin Ping" by Lanling Xiaoxiaosheng of the Ming Dynasty: "Made Li Ping'er laugh ”

Example sentences

1. The teacher’s joke was so funny that the students were so happy.

2. Xiao Wang’s jokes were so humorous that the comrades laughed so hard that they couldn’t straighten their backs.

3. After hearing this story, everyone else burst out laughing. Only the fourth girl smiled and said nothing.

4. As soon as this crosstalk actor opens his mouth, the audience will burst into laughter.

5. His jokes made everyone laugh so hard.

6. Before he finished telling his story, his classmates were already laughing so hard.

7. After he got drunk that time, he vomited so hard that he felt heartbroken.

8. He looked languid, but occasionally he would make everyone laugh with a cold comment.

9. The mother made a funny face, and the child laughed. I had to laugh so hard.

10. Yang Yuechan laughed so hard, "It's still... crispy on the outside and tender on the inside, look at you like that! Hahaha...".

11. Some people even laughed so hard that their faces turned red.

12. Seeing Qi Yue's movements in the air, everyone present immediately burst into laughter.

13. Of course, after the teacher finished scolding, the whole class burst into laughter.

14. The girl holding the clay pot leaned forward and backward, accidentally dropped the pot, and splashed water all over Yin Chidian's body.

15. Tao Jiu looked like he was relying on his old age to show off his strength. In the end, he couldn't hold himself any longer and laughed so hard.

16. McGrady and others who were watching the excitement outside the court had already expected this scene and were laughing so hard.

17. Seeing Qin Feng shaking goosebumps on his body, Li Xiaoxiao laughed.

Synonyms

Staggering? [ dōng dǎo xī wāi ]

Refers to walking unsteadily and not being able to control one's body. It also describes an object that is tilted incorrectly.

Forward and backward? [ qián hé hòu yǎng ]

Forward and backward: the body bends forward. Lean back: Lean the body backward. Refers to the body rocking back and forth. Describes the body standing unsteadily. Also known as "forward and backward."

Lean forward and close behind? [ qián fǔ hòu hé ]

Describes the appearance of laughing so hard that one cannot stand straight up.

Antonyms

To call out the sky and grab the ground? [ hū tiān qiāng dì ]

To grab the ground: to touch the ground. Shout to the sky and bang your head on the ground. Describes extreme sadness.

Crying and swallowing? [ yǐn qì tūn shēng ]

The tears can only flow into the stomach and dare not cry out. Describing being oppressed, enduring pain without daring to express it publicly.