Top Definition
A conversation that lasts significantly longer than any party intended, and which may result in an unexpected dead cell phone or need to re-hydrate due to its surprising length.
There was hardly a topic we didn't talk about during last night's marathonversation, after which I had to charge my cell phone and re-hydrate.
by AwesomeGuy47 July 10, 2009
5 Words related to Marathonversation

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