Διαγωνισμός ευφυολογήματος, έξυπνης / εύστροφης / αποστομωτικής / πνευματώδoυς ατάκας / απάντησης
Διαγωνισμός (λεκτικού) «καπακώματος»
A quip is an observation or saying that has some wit but perhaps descends into sarcasm, or otherwise is short of point; a witticism also suggests the diminutive. Repartee is the wit of the quick answer and capping comment: the snappy comeback and neat retort. (Wilde: "I wish I'd said that." Whistler: "You will, Oscar, you will".)
In French one can distinguish between the bon mot, a witty remark actually produced, and the esprit d'escalier, the thing one should have said that typically comes to mind too late to be of any use.
https://en.wikipedia.org/wiki/Reparteeουσ. εύστροφη, αποστομωτική ή πνευματώδης απάντηση: he's good at repartee δίνει πληρωμένες απαντήσεις # πνευματώδης διάλογος, πνευματώδεις διαξιφισμοί: engage in witty repartee επιδίδομαι σε πνευματώδεις διαξιφισμούς
http://www.in.gr/dictionary/lookup.asp?Word=repartee&TranslateButton2=Go