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Bluechessium is a slang term in forums, where a user makes a very long post filled with quotations and replies to many other posts in the same thread.

Created when addressing a large backlog of unread posts. Sometimes mispelled as bluecheesium.

When the term is used on a forum, it's usually written in blue text.
"Excuse the bluechessium guys, I haven't had any internet for a week."
by CanadaAotS July 27, 2009
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