n. Unsolicited commercial e-mail messages.

Example Citation:
"A commission appointed by Gov. Jim Gilmore has recommended imposing criminal and civil penalties, including possible jail terms, for sending spam using Internet service providers based in Virginia."
—Matt Richtel, "Virgina Panel Recommends Tough New Penalties on Spam, The New York Times

Spam originally meant "flooding a [Usenet] newsgroup with irrelevant or inappropriate messages" (The Jargon File). This original sense derived from the overuse of the word "spam" in a sketch performed by Monty Python's Flying Circus. The sketch begins as follows:
Mr. Bun: Morning.

Waitress: Morning.

Mr. Bun: Well, what you got?

Waitress: Well, there's egg and bacon; egg, sausage 
and bacon; egg and spam; egg, bacon and spam; egg, 
bacon, sausage and spam; spam, bacon, sausage and 
spam; spam, egg, spam, spam, bacon and spam; spam, 
sausage, spam, spam, spam, bacon, spam, tomato and 
spam; spam, spam, spam, egg and spam; (Vikings start 
singing in background) spam, spam, spam, spam, spam, 
spam, baked beans, spam, spam, spam and spam...
In recent years, the use of "spam" expanded to include unsolicited commercial e-mail. In case you don't know, spam is a luncheon meat consisting of compressed pork shoulder with a bit of ham tossed in. It is produced by Hormel Foods who even have an Official Spam Home Page.

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