Translate a joke accurately, do not use translation software.

Two brothers were flying. The younger brother got airsick and kept vomiting, bag by bag. The older brother was going to get the bag. When he came back, he found that the whole plane was constantly vomiting. The elder brother asked the younger brother why, and the younger brother said, "I saw that this bag was full again, so I had to drink half a bag, and they all vomited."

100% accurate