A term commonly use to describe the bandana that gang bangers, gangsters, kids influenced by rap and others wear in their back left pocket to signify allegiance to something. Members of the Bloods wear red flags whilst Crips wear blue flags. These can be found in the back left pocket, around the head, neck or wrist. Others can wear them as a sign of support towards friends or a particular ideal.
"Saw him rockin' his red flag in his back pocket"
by nik87 May 10, 2006
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A verb used mostly in the military to describe the act of allowing the muzzle of your weapon to cross paths with friendlies.
"Always practice muzzle awareness. Don't flag your buddy!"
by briles24 April 22, 2006
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Gang colors. Some people say that if more than 50% of your clothing is red or blue, you're "throwin flags"

Most often people won't think you're in a gang unless you're wearing lots of red or blue along with a red or blue durag and hat.
"Niggas wearin flags cause da colors match their clothes/They get caught in the wrong hood and filled up wit holes muthafucka" - 50 Cent
by rsabowski December 4, 2003
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The bandana one group or gang will wear/rock/display to let others know who they run with.
Stupid kid and friend:Lets go snatch his bandana.
Blood gang member:Dont fuk around wit my flag....touch it and I'll crack u in the mouth!
by F.S June 27, 2005
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To have sexual intercourse with a person from a sovereign nation, recognized by the United Nations, thus laying claim to that person’s “flag.”
Did you get any flags on your backpacking trip?
Yeah, two flags: Spain and Germany.

Flagging also known as World Domination or Capture the Flag.
by Atlas Al September 18, 2009
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The advanced skill of holding your body horizontal while gripping on to a various pole. This activity requires great skill and stamina, but when done correctly, is totally amazing.
Fred: "Dude, you should go flag that street light pole."
Daryl: "Haha, yeah right. I don't have the core strength for flagging."
by Late-skeezy June 3, 2009
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(v) The act of pulling another person's pants down.
My brother got in-school suspension after flagging a girl in gym.
by PenguinPants November 2, 2004
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