teacher

Math teacher: Tell me kiran, if a milkman mixes 2 litres water and 1 liter milk, he will get 3 litres.
What will happen if he mixes 6 litres of water and 3 litres milk?
kiran : I am not a milkman, how can I solve it?

Teacher is explaining to the student,
'if you see someone sinking in the water, you should pull his hair to save him from the water. It will be easy for you.'
Student: but sir, if it happens to you, we shouldn’t help you.
Teacher: why?
Student: because you don’t have any hair.