Sarcasm is a very clever way to say your thoughts aloud, without actually stating them. In fact, many consider it to be an undisputable armour to voice their opinions in a humorous way. Pointing out certain things or criticising in a subtle manner, masked with humour is sarcasm at its finest. Some people are usually very sarcastic and these are the same people who also have a very opinionated nature. Hence, here listed are the top zodiac signs who are extremely sarcastic.