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2.
An inability to communicate with others, ie: when you have no cable, the computer isn't working, and your phone's been cut off.
"Roadkill" doesn't know if his team won because he's been excommunicated.
by deemon1211 October 11, 2010
 
1.
To get thoroughly intoxicated to the point where nothing matters anymore. This often includes blacking out.
Kenny: "Hey, man, what are you doing after finals?"
Keith: "I'm about to get excommunicated..."
Kenny: "Hell yeah."
by thePope July 11, 2013