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"mainstream media", major TV networks and large newspapers.
Blogs are eating into MSM eyeball share.
by MiF September 19, 2004
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Jun 4 Word of the Day
The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.
"My visit home turned into Bisexual Groundhog Day. My mom acted shocked when I told her I'm going to Pride next week, so I had to come out to her as bisexual AGAIN."
by Tiggy Upland April 15, 2014
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2
Abbreviation for "mainstream media". No matter who you are, they're not on your side.
"Hey, Republican friend, did you see that news story on Bush?"
"Yeah, the MSM is so biased."

"Hey, Democrat friend, did you see that news story on Bush?"
"Yeah, the MSM is so biased."
by Bamos June 27, 2007
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3
Mass Stupidity Media: the network of news, opinion and entertainment outlets from which most people acquire information about the world around them. So named because its once-vital role in keeping people constructively aware of civic matters important to their future, has been abdicated in favor of gossip, celebrity-fawning and misinformation.
"More people know about Miley Cyrus' tattoos or what name Sean Combs is going by this week, than have any clue who their own Senators or Congressman are, or how the government is supposed to operate -- and the MSM like it that way."
by Caomhainn April 10, 2014
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4
Men who have sex with men; an abbreviation initially used for classification purposes.
AIDS is no longer only an MSM problem.
by Ted Gellar March 14, 2005
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6
Methylsulfonylmethane, a health supplement. In pure form it is used to cut mainly meth among possibly other drugs.
This is okay meth, it might be cut but only with MSM which is safer than other things to cut it with.
by mrmotherfucker May 22, 2017
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