Gopal was filling up an application form for a job. He promptly filled the columns titled name, age, address, etc. Then he came to the column sex. He was not sure as to what was to be filled there. After much thought he wrote  'Twice a week'.

On seeing this in the application form, he was told that it was wrong and what they wanted to be filled was either male or female.

Again Gopal thought for a long time before coming up with the answer - Preferably females.