Patient: "Hey doc, can I ask you a question?"
Patient: "This friend of mine went to the hospital--"
(Because I have nothing better to do besides answer medical questions about people I never met...)
Patient: "And my friend was telling me that when they tried to draw his blood, there was no blood. They couldn't get out a drop. Then they got some expert to try to draw the blood and they couldn't do it either! And they told my friend that he has no blood left. Like, no blood in his whole body. Does that sound right to you?"
Patient: "Well, I didn't think so either. But they couldn't get any blood out of him. And he can't walk."
Me: "Without blood, you can't live."
Patient: "Yeah, you're probably right. He probably at least had a few drops."