"The Cockroach" joke
Santa singh was very keen on doing his ph. d. he was in search of a subject on which no one had done any research before! As he was thinking over it he found a cockroach on the table. he decided to do a research on it. he picked the cockroach and put it on the table and said "run". the cockroach ran. he pulled out one second leg and told "run". The cockroach ran again. this way the cockroach tried to run even when it had just one leg. He pulled out the last leg of the cockroach, put it again in the centre of the table and said:"run". The cockroach could not! Our professor was satisfied with his study and started writing his thesis:" when you pull out all the legs of a cockroach, it cannot hear anymore".
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