A term used for a random, non-sequitur notion that occurs in one's train of thought at any given moment in time. Usually an awkward moment at that. The term comes from an abstract thinker/comedian/musician named Zevin who started posting several of such terms on Myspace. The term soon found popularity in the in 2006 and has been used primarily for awkward thinking ever since that timeframe.
"Damn, what an odd, but highly intriguing idea. That would make a great Zevinism"