To flip a girl over and have sex with her. This is done when the female in question has an attractive body, but a fugly face.
Man, that booty's kickin, but she's got such a bad grill I think I'd have to Armstrong her!
by David E January 26, 2006
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The ability to give excessive hand jobs without getting tired.
The slut who hangs out behind the TGI Friday has an armstrong.
by Grape Ape Face Rape July 9, 2010
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a very high note or a series of them, especially on a trumpet ( from Louis Armstrong ).
The guy was incredible! He could play Armstrongs on a consistent basis!
by William Warney December 13, 2010
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To win seven times in a row by cheating without getting caught.
Man, this guy keeps Armstronging these races!
by derd July 14, 2006
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Verb:

1.)The act of ridiculing somebody, or otherwise attacking their character all the while knowing that they are actually right and telling the truth, and you yourself are the liar and the cheat. ie. Publicly admonishing, engaging in the defamation of their character, slandering, or libel. May go so far as to bring forth legal action upon someone for actually having told the truth about you, and thus exposing you.
Yo, even though that bitch really was cheating on Joe, she went around "Armstronging" him by saying that he not only cheated on her, but beat her as well!
by Slojay January 19, 2013
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an "armstrong" is a person or people who take their cycling too seriously. They travel all over the city in their tight, spandex bike suits, goofy helmets, backpack drinks, and their livestrong bracelets. They treat everyday in the city streets like it's the "Tour De France." They are known to ride fixed gear bikes. They act like they are better than everyone because they are living strong, when in reality they were dead a long time ago.
I was walking down the street with my three year old child when a bunch of rabid Armstrongs nearly ran us over
by VictimofaBombRaid July 1, 2010
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Generated from the Lance Armstrong debacle, Armstrong is a byword for profusely lying, tricking, or covering up aspects of ones life. To misguide or swindle those around you into believing that you have achieved or completed certain acts. Can be used to describe a person or activity.
That sluts been stuffing her bra, what an Armstrong.

Dont Armstrong me, you gonna wingman for me or not?
by Jack Spade January 24, 2013
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