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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Top Definition
n. The act of wearing keys, colored handkerchiefs or other objects on the body to indicate sexual interests. Worn on left to indicate you're a bottom, on the right to indicate you're a top. There are several contradictory lists saying what each color code indicates. Mostly used in the gay male culture, and has branched out to lesbian and BDSM cultures, but may be dying out.
verb. to flag
He was flagging green, but I couldn't tell if it was hunter green or forrest green without my color chips.
by Peter November 23, 2003

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To be a flagger. The act of flagging.
To say that you are going to do something and not do it. To get the reputation of being a flagger is not a good thing.

by Stephaney Patino May 06, 2008

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US Military terminology: the act of pointing the barrel of a firearm at another member of the US Military. Used especially during close-combat situations and during training.
During basic rifle marksmanship in basic training, a private got tackled for flagging a drill sergeant.

When clearing rooms, you must pay close attention to your muzzle so as to not flag your buddy.
by PFC King August 31, 2005

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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 01, 2004

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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 03, 2009

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whilst climbing, this is the act of throwing a leg to a certain position that gives you more balance or allows you to reach an otherwise unreachable hold.
By flagging his right leg, Tristan was able to reach the final hold on the route.
by CooCooCoo February 02, 2006

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