one of the winners in the Washington Post's Style Invitational - words altered by adding, subtracting, or changing only one letter and supplying a new definition
(Noun). The communication divide or breakdown experienced when (i) one party interprets the other party’s sincere statement as sarcastic or (ii) one party interprets the other party’s sarcastic statement as sincere.
Tom: "I know Wendy wants me to call her, but she keeps ignoring my messages."
Joe: "Hey, did you go to the Sarchasm show last night? I did, and it was totally radical!"
Bob: "Radical? Was there a riot?"
Joe: "No... I was being ironically vintage. GAWD."