Tut! Tut! Kin is an expression used to express surprise or shock. It is derived from the Egyptian Pharaoh Tutankhamun, who was famously discovered in 1922 by British archaeologist Howard Carter. The term is often used as a humorous exclamation, and is also used to express disbelief or amazement. The acronym TSK is an abbreviation of the phrase 'tut-tut, ' which is another way of expressing surprise or shock.