Sorry, but Sarcastic People are Actually Smarter Than You Are

Dr Shamay-Tsoory, a psychologist at the Rambam Medical Centre in Haifa and the University of Haifa, said: "Sarcasm is related to our ability to understand other people's mental state. It's not just a linguistic form, it's also related to social cognition." Dr Shamay-Tsoory further explained that "understanding other people's state of mind and emotions is related to our ability to understand sarcasm."

http://www.puckermob.com/lifestyle/sorry-but-sarcastic-people-are-actually-smarter-than-you-are

Seems pretty obvious, to be honest.