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1.
A ship war is when two groups of shippers fight over whose romantic duo is destined to be. It is especially fractious if the head writer for the show publicly disses one coupling. These fights happen on the forum board for the show and lead to lots of trolling, ship vids, shopped pics and out right hatred. The only positive is they bring much lulz.
@fastmaster Hey, did you see that Ship war on the lost board?

@markyfunky They be a hating tonight.

@fastmaster At least Glee isn't in a Ship war yet.

@tehmaster They will when RM launchs the back 9. He said Puchel is a failed mashup
by Thunderclap Morgridge December 20, 2009