dinner thread

n. an obnoxiously long online discussion whose subject matter may concern a multitude of different topics. used in any context pertaining to online threads, esp. facebook messages. often aggravates the lesser known psychological condition known as macronematophobia.
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"Dude, have you been keeping up with the dinner thread? It's five hundred messages long!"
"Nah, man, my shrink said I can't; I'm macronematophobic."
"Bogus, dude."