Milo Yiannopoulos - Breitbart: 'Cuckservative’ Is a Gloriously Effective Insult That Should Not Be Slurred, Demonised, or Ridiculed - "Another popular use of the term is as a reference to conservatives who 'virtue signal' with meaningless platitudes to suck up to places like MSNBC. Or it could just mean Sen. Lindsey Graham, Karl Rove, or, yes, Jeb Bush."

‘Cuckservative’ Is a Gloriously Effective Insult That Should Not Be Slurred, Demonised, or Ridiculed

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Thus, “cuckservative” can mean many things. It could mean conservatives who are afraid of social exclusion and kowtow to the liberal media establishment. It could mean conservatives who play the left’s game of identity politics, accusing their internal opponents, such as Donald Trump, of being racist or sexist or rapey for spurious or opportunistic reasons.

Another popular use of the term is as a reference to conservatives who “virtue signal” with meaningless platitudes to suck up to places like MSNBC. Or it could just mean Sen. Lindsey Graham, Karl Rove, or, yes, Jeb Bush. 

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http://www.breitbart.com/big-government/2015/07/28/cuckservative-is-a-gloriously-effective-insult-that-should-not-be-slurred-demonised-or-ridiculed/