What is the stem of chopsticks in the joke?

Chopsticks mean that everything in the world has two sides. Everything has two sides. It's in pairs. You can't live without one.

"Duanzi" is an artistic term in cross talk, which refers to a paragraph or an artistic content in cross talk works. With the frequent use of the word "Duan Zi", its connotation has quietly changed, and people unconsciously and subjectively integrated it into some unique connotations. In addition to its original meaning, this word is also a common name for vocal music programs or literary works. So some "yellow jokes", "yellow jokes" (yellow jokes), "cold jokes" (connotation jokes) and "black jokes" (horror stories) also appear with the expansion of the meaning of the word, but ironically, the cradle of "jokes"-"art" has been included in "jokes" (for example,