English Original
Little Johnny was a constant disruption in his third-grade class due to his loud, frequent flatulence. After keeping him after school, his teacher demanded an explanation for his offensive behavior.
"I do it because I'm the best at it, and I'm proud of that," Johnny declared.
"If I can prove I'm better than you, will you stop?" the teacher challenged.
Johnny agreed. The teacher placed two sheets of paper on the floor, each with an identical pile of chalk dust. Johnny dropped his pants, squatted, and let out a fart that blew away all but a tiny speck of dust.
The teacher then lifted her skirt, removed her panties, squatted, and farted. When she finished, not a single trace of chalk dust remained on her paper.
Astonished, Johnny asked to see it again. As she repeated the feat, he peeked up under her skirt.
"No wonder you won!" he exclaimed indignantly. "You've got a double-barrel!"
中文翻译
小约翰尼因为经常在课堂上大声放屁，严重扰乱了他三年级班级的秩序。放学后，老师把他留下来，坚持要他解释这种冒犯行为的原因。
“我这么做是因为我比任何人都做得好，而且我为此感到非常自豪，”约翰尼宣称。
老师说：“如果我向你证明我比你做得更好，你会停止吗？”
约翰尼同意了。老师在地板上放了两张纸，每张纸上都有一小堆一模一样的粉笔灰。约翰尼脱下裤子，蹲下来，放了一个屁，把纸上几乎所有的灰尘都吹走了，只留下一个小斑点。
接着，老师脱下内裤，撩起裙子，蹲下来，也放了一个屁。当她完成后，她的纸上连一丝粉笔灰的痕迹都没有留下。
约翰尼大吃一惊，请求再看一次。当她重复这个过程时，约翰尼从她的裙子底下偷看了一眼。
“难怪你赢了！”他愤愤不平地喊道，“你有个双管的！”