A boy I teach told the class this one. A man told his son to go chop the wood, so his son goes out and after a while ends up chopping off his finger. His dad puts the finger in a bag and takes him to the doctor. The doctor sews the finger back on and it heals just fine. The dad tells his son to go chop the wood again, and this time the boy chops off his foot. The dad puts the foot in a bag and takes him to the doctor, who successfully reattaches the foot. The dad tells his son to go chop the wood again and the son chops his own head off. The dad puts the head in a bag and takes him to the doctor. After the doctor tries his best, the doctor says, ""I'm sorry, your son is dead."" The dad says, ""I don't understand, you always helped him before. Couldn't you reattach his head?"" The doctor says, ""Oh yes, I reattached his head just fine, but he suffocated in that bag.""