A joke that you can laugh at when you cry.

A gentleman caught a cold and went to the hospital for intravenous drip. The nurse quickly inserted the needle into Mr. Wang's body and hung physiological saline. 1 more hours passed, and the normal saline was finished. When the nurse came, she put on the bottle at once. The gentleman was puzzled and asked the nurse, "Miss, isn't there only one bottle on the prescription list?" The nurse pointed to the empty bottle cap behind the salt water and said, Sir, you are so lucky. This bottle won the lottery-another bottle!