1. The greatest reporter in the history of television
2. God among men.
Bill O'Reilly is the greatest human being to ever walk the planet.
by JS1013 September 19, 2005
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Slang for an over-sized penis.
Did you see the bulge in that guy's jeans? He must a Bill O'Reilly
by Thomas Frick March 25, 2008
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An amazingly charming Fox news anchor who stays out of the lame stream media and keeps the public informed on the real happening of the united states and the world.
Bill O'reilly is the bee's knees!
by edwardscissor fins May 22, 2010
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1. A targeted, IPM (Integrated Pest Management) tool used best to control/eliminate liberal infestations in social settings.

2. A person most people find loud and egocentric. The person is always right and everyone hates him for it. He goes out of his way to let you know whilst using dictionary words that sound really smart that nobody uses anymore. Furthermore, the person won't let you get any more words in edgewise after he has rebuked their point.
1. John - "Shirley is such a raging socialist whack job!"
Brian - "Yeah! Go over there and give her some Bill O'Reilly!"

2. Jennifer - "Global warming is real!"
Hank - "Don't be such a poltroon! Eh! Don't try to talk over me! You have to be fair and truthful with the folks! The folks! The folks can't take any more of you inconsistent liberal babble! Don't be a pinhead!"
by G. Gordon October 28, 2010
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A left-leaning Independent who is okay about some things but the rest of the time you want to kick him right in the fucking nuts for being such a liberal fag.
bill o'reilly is just another example of the liberal media
by suck my ass July 27, 2006
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A large family of good people from all walks and shades of life. Origins around Rochester, Geneva and Canandaigua New York. A force to be reckoned with. Also known as OPC. Not limited to New York State, the OPC has family all over the world
O'Reilly's can often be identified by their cheers to "sodomy".

The O'Reilly Pirate Crew are pranksters by nature and good spirited drunks.
by Jethro Jebidiah O'Reilly November 28, 2007
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When you fuck a girl on period then use your dick to wipe a blood mustache under her nose.
"She was on her period, but you know me I'm a nasty mother fucker. She wouldn't let me put it in her but so I gave her a dirty O'reilly instead.
by BigB $ March 17, 2014
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