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A "buddy fucker." One that screws over his fellow battle buddies for his own gain in life. A blue falcon is commonly known as the guy no one likes, the bird of prey, or the platoon bitch.
Maddox wasted all of his toilet paper crying in the bathroom, so to compensate he stole everyone else's.....damn blue falcon
by Thunderplebe October 26, 2009
In the U.S. Army, someone that does not support the team or unit is said to not support their "buddies." Because of this, they are called "Buddy Fuckers," because they let down their buddies. Since such things are not considered polite in mixed company, people in the Army endeavored to come up with a similar two letter name to represent the term. Blue Falcon was a cartoon character from the Dynomutt cartoon series during the mid-1970s, a time when many of the people originating the term grew up. So, calling someone a Blue Falcon came to be a substitution to calling them a "Buddy Fucker."
Observing someone else keeping incorrect change where the person was given extra, a man in dressed in camouflage turns to his companion in camouflage and says: "He's a real Blue Falcon."
by MilitaryMyths June 27, 2009
Someone who habitually fucks over another person.
Me: Sweet now we can not go to work!
Hundo: Nope, I already told them that the parade was stopped.
by OB234 May 13, 2010
1. "Blue Falcon" is military slang term that was originated in the US Marine Corps. The term was created as a code for a buddy fucker. A "Buddy Fucker" denotes a Marine as un-trustworthy. The assumption being that this is the kind of soldier that would put his own needs ahead of the needs of his platoon or brother in arms.

2. Since the repeal of "Don't ask Don't tell" it has also come to be used to refer to homosexual Marines who show an overt interest in getting naked in a foxhole with a straight or seemingly straight soldier.

3. Noun. referring to the "engorged genitalia" of a male homosexual soldier that will not be satisfied until it plunders the booty of a straight Marine - or a Marine that thinks he straight but has trip everyone else's BFT. Just think of Blue Balls, now you have a Blue Falcon to go along with it.
1. "I hear the weekend pass has been revoked because Pvt. James feel asleep at his post" - "Great having a blue falcon in the platoon"

2. "I don't like having Pvt. Sessions behind me on patrols - always get the feeling that that blue falcon is going to pull a Dexter, get me in the neck with a syringe and push my shit in."

3. "I was in the showers with Pvt. Kennedy - he was scrubbing on his blue falcon - I decided leave my soap and make a run for it."
by Elia Gottenn September 11, 2012
Military term for "Buddy Fucker"
Kill- "Top sure was a Blue Falcon on that scraper estimations test huh?!". C.T.- "Hell yeah! He might have covered half the shit on the test! Kill- "Buddy Fucker!"
by Kill1349Chief January 30, 2009
Blue Falcon
(noun) (Pejorative)
1. One who does not help his/her fellow soldier, and or one who intentionally gets another soldier in trouble. 2a person who has put other friends family soldiers and or country in harm's way or a potential negative result situation.
synonym: "buddy fucker," "Bravo Foxtrot" is also used and has the same meaning.
This phrase is a fine example of a Minced Oath an expression that is spoken that resembles a profanity and has subsequently removed the untoward harshness of the original expression.
Mike didn't get selected for a promotion so instead of aspiring to do better and work harder to get the position he tried to humiliate his boss Gene, who was his friend at the time, in public to Genes Bosses so that Gene would get fired and be replaced by someone more friendly to Mike.
Mike is a True Blue Falcon.

Some other examples of a minced oath TV show Battlestar Galactica uses the work frack instead of fuck.

Have you ever wondered why so many phrases of surprise start with a G? e.g. Minced Oath
old phrases:
Cheese 'n' crackers got all muddy (Jesus Christ, God All mighty)
Good grief = Good God
Gosh darned = God damned
Golly = God
Great Googly Moogly = Good God and Mother

by No Klue April 06, 2007
The act of diming out your friends or leaving them out of something they would have want to be involved in. Otherwise know as a sell out or in the military a "Buddy Fucker".
Jason Berry "Blue Falconed" me for lunch today!!
by ilbbc January 25, 2010