Snark

Snark 

Refers to a type of sarcastic wit or verbal interplay between characters. Snark tends to run the slightly more biting edge of humour than mere sarcasm. Characters whom excel in it are referred to as being "snarky". The term was first coined by Lewis Carrol in The Hunting of the Snark, and is believed to be derived from the combination of "snide" and "remark".