Top Definition
An endless, and often boring list of comments made by a number of friends over a number of days, often resulting in posts over 50 times the average quota of a Facebook post that invariably veer miles away from the initial postee's post.
Pete: Had the best night eva with Sammy D and co - yeah man, you guy's fucking rock!
(100 posts later ...)
Eddie: I think elephants really have amaaaaaaaaaazing memories and shit. And wtf is with the Facebook Commentathon dude?
by Bally in the Bellfry February 08, 2011

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