Eutrapelia comes from the Greek for `wittiness` (εὐτραπελία), referring to pleasantness in conversation. It is one of Aristotle`s virtues, the `golden mean` between boorishness (ἀγροικία) and buffoonery (βωμολοχία). Later on it came to mostly signify jokes that were obscene and coarse. The word appears only once i...