George Bush's (pick one)excuse for going to war to scoff up some oil, regardless of how many people have to die for it.
Soon to be former President G.W. Bush used the Bush trademark "Weapons of Mass Delusion" to rush into a war that the rest of the world was trying desparately to stop.
by Super Dave February 11, 2004
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Any or all of the tanakh, the bible, the koran, the old testament, the new testament.
For 4000 years weapons of mass delusion have been used to persuade the ignorant masses that an imaginary supreme being guides and governs their life.
by noteapot January 3, 2008
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A common misbelief shared by many of the same culture or region.
Penny: Um, me, okay, I'm Sagittarius, which probably tells you way more than you need to know.

Sheldon: Yes, it tells us that you participate in the mass cultural delusion that the Sun's apparent position relative to arbitrarily defined constellations and the time of your birth somehow effects your personality.

Penny: Participate in the what?

--Big Bang Theory
by Leo Baker August 14, 2012
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