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The act of getting it on with a girl/guy from a country other than your own. The qualification is that he/she has to be born in the country you want to lay a claim to, and ethnic heritage from there is a plus.

Made popular by Roosh V, traveling author extraordinaire.
"I just got my Chinese flag."

"But dude, Li Lu grew up in Cupertino."

"Doesn't matter, she was born in Guangzhou."

Text sent at 3:56AM: "Chilean flag"
Text received at 3:57AM: "Congrats fuckface, i hate you"
by PeteP February 21, 2013
Word used for stamps in Prison. (i.e. a flag is often pictured on a stamp)
I'll give you 5 flags for the old issue of Buttman.
by Chris to the Izz-H December 22, 2007
A 'Flag' is a proverbial claim made by a male when he has had sexual interactions in a particular way with a female and that female has not had or experienced that particular act/position before with any other male.
Man, that dude is going to struggle to place flags on El, we boned in every way, shape and form possible.

Man, that guy is going to have to stoop to some borderline degenerate actions to claim flags on that girl.

I feel good man, I have totally flagged that girl. short of cumming in her ear while fingering her ass.. he is gonna struggle to lay flags.
by Themanwhoflagged February 15, 2013
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 04, 2003
1.)When the game you're playing lags, this is what you say.
2.) Abbreviation for "fucking-lag"
"Damn my game lagged up! F-lag!"
by Neoni August 25, 2006
to not do / want
alex - wanna go for a walk
mark - nah flag stay here and get baked

i can't be flagged isnsted of can't be fucked
by metaldread September 27, 2010
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
a Flag, A Stripper who is constantly hanging from a pole, blowing, in or out of the wind.
by RyanValejo December 06, 2011