How can I turn my jokes into laughter?

I often hear people tell stories and listen to them say some funny laughter. Now I'll share it.

"When I was a child, I visited my father's army every year, and I had to pass through Baoding, Beijing and other cities, so I was regarded as a knowledgeable authority.

once, I heard that the village sent an English teacher to our school. There was no English class in the school before, and everyone was quite mysterious about English. Finally, I was asked to talk about English. I said, "English is very simple. All words are composed of 28 letters. Just remember 28 letters and you're done." I may have heard this statement from an uncle in the army, but I should not remember it accurately. However, I firmly believe that this statement is the truth. A few days later, the English teacher came and wanted to know about your understanding of English. My classmates pointed at me and said, "He will." I said to the teacher, "don't listen to their nonsense, teacher. I can't even recognize all 28 letters." The teacher casually said, "I don't know all of them. I'm afraid no one in this world knows all 28 English letters. "

at that time, I didn't hear what the teacher meant. In class the next day, the English teacher said, "There are always 26 letters in English ..." Hearing this, my face was so hot that I wanted to have a crack in it. From then on, I learned that "knowing is knowing, not knowing is not knowing". If I brag and show off my bravado, I will be embarrassed not far away. "