On facebook, when you get into an intense dicussion with someone and both of your profiles' walls get filled up with posts from the other person. This can occur about drama, or when you're trying to make big plans for the weekend.
"Did you hear about all the drama with Susie?"

"Yeah, Jake and I got in a huge wall war about it"
by Houseofpayne July 2, 2009
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getting a a post war with friends by posting the most random things you can think of. whoever gets annoyed first surrenders and loses. or you could end in a stalemate. its REALLY fun :)
person 1: wall post war!
person 2: billie jean
person 1: lemonade
person 2: yogurt in french is yaourt
person 1: i hate onions
person 2: i love jellybeans

and so on
by Raine Catherine June 9, 2010
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