This is a joke.

When I told a joke, the whole class burst into laughter, some (laughing their heads off), some (laughing) and some (smiling).

reel to and fro

Pronunciation: [qi á n y mng ho u hé]

Interpretation: describes the body shaking back and forth (especially when laughing).

Source: Gao Yuan Wen embroidery "Meeting the Emperor" The first discount: "Staggered; Come back and forth. "

Vernacular translation: when sitting, the body is skewed or unstable, and the body shakes back and forth.

Chinese character strokes:

Extended information synonym: hilarious

Pronunciation: [Xi Ao]

Interpretation: describe the whole room laughing at the same time.

Source: Song Ouyang Xiu's "Returning to the Field" Volume 1: "Feng Xuju yelled at his right foot."

Vernacular translation: Feng Xuju raised her right foot and made the whole room laugh at the same time.

Grammar: formal; As predicate and complement; With praise.