A mode of conversation in which each participant tries to one up the other with their vocabulary. Usually using abnormal words that they would not normally be used in conversation.
Guy 1: Bro, I'm so perplexed by the array of errands that I must carry out today.
Guy 2: Yeah, you seem pretty perturbed
Guy 1: Yeah, I should probably commence on taking care of my itinerary.
Guy 2: Itinerary.....you get points for that one. haha....but I still think I'm winning this game of open-air-scrabble.