Please tell a cold joke that queuing can freeze to death. Thank you.

Wu is very curious. Every time he goes shopping, whenever he sees someone waiting in line, he will gather together. Because she decided that there would be no queue without good things; The longer you wait in line, the more you can buy good things.

Once, he saw a group of women waiting in line in an alley, immediately taking three steps and making two steps, and soon entered the queue. The female comrade in the back giggled, while the person in front smiled back. Wu was very curious, and his face was stretched straight with laughter. He said angrily, "You row, I row. What is worth laughing at! " However, everyone laughed even harder. Seeing that he was still puzzled, a female comrade next to him couldn't help laughing: "Comrade, we are all here for gynecological health examination. What's the matter with your queue? "

At this time, Wu suddenly looked up curiously and saw the words "Maternal and Child Health Station".