Wikipedia
Eutrapelia
Eutrapelia comes from the Greek for ' wittiness' , referring to pleasantness in conversation. It is one of Aristotle's virtues, the "golden mean" between boorishness and buffoonery . Later on it came to mostly signify jokes that were obscene and coarse. The word appears only once in the New Testament, in Ephesians 5:4, where it is translated "coarse jesting" in the NIV.