The act of creating a word and using the word( the word would be retendous too)in presence of someone who believes itself to be a smart-
ass with a great vocabulary to later on finding them using that word and then telling them that it is not a real word that is present in a
dictionary other than urbandictionary proving that they are just an
ass.
Guy annoyed by smart-
ass: That party was so retendous!
...hours later...
smart-
ass: Man, I had the most retendolous time in *insert random bar here*
Guy annoyed by smart-
ass: That is not a real word...
smart-ass: but I heard you say it a few hours ago
Guy annoyed by smart-ass: i just made that word up to prove you are an ass