Teacher is explaining to the student, тАЬIf you see someone sinking in the water, you should pull his hair to save him from the water. It will be easy for you.тАЭ Student: тАЬBut sir, if it happens to you, we wouldnтАЩt help you.тАЭ Teacher: тАЬWhy?тАЭ Student: тАЬBecause you donтАЩt have any hair!тАЭ