Joke but to think before criticising others

A man went to a doctor with his wife complaining about deafness in her. He told doctor to watch and asked his wife, 'what sambar you prepared today?'- He asked her four times the question and complained the doctor that she is not responding even asked four times. The wife told the doctor that she replied four times already. The doctor realized that the deafness is in husband and not in wife. Like this many of us criticizing others without knowing our faults.
One should know his own defects before we criticizing others defects. More over criticizing others in a public place in front of others is a bad practice. If we want to tell some one about their defects, we can tell them politely, but separately. Discuss