kappa

noun3

1. •
   The tenth letter of the Greek alphabet.
2. •
   A tortoise-like demon or imp.

   • It was not quite possible for a kappa to go pale, but this one managed, shrinking partly into its shell. — 2013
3. •
   A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying asset.

exclamation1

1. •
   (Internet) Used to indicate sarcasm in imitation of Kappa as used on Twitch.tv

noun1

1. •
   An emote, often used as a postscript, to indicate that the preceding statement is sarcastic or false.