A blue flag stands for penis loss. A wise geman person ones said that hoisting a purely blue flag, or at least a blue flag without any symbol on it, indicates that the hoisting person has lost his phallus.
Person A: "Look there, captain, those poor men hoist a blue flag"
Person B: " These poor souls...."
A crips bandana, flag or otherwise used bandana.
Don't want to wear my blue flag in the hood, for fear that a blood might shoot me while suspecting me to be a crip.
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Generally a blue bandana, most commonly used by Los Angeles street gang known as the Crips.
"You see the blue flag in his left pocket? That's a Crip."
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The Bonnie Blue Flag was a flag used by Confederate soldiers as an informal military flag, and is the subject of a famous marching tune, "The Bonnie Blue Flag"
Hurrah! Hurrah! For Southern rights hurrah! Hurrah for the Bonnie Blue Flag that bears a single star!
Robert was very proud of himself when he was designated bearer of the Bonnie Blue Flag
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F1 Flags waved for Nicholas Latifi, Lance Stroll, or previously, Nikita Mazepin.
Blue Flags tell a driver to let cars through that are a lap ahead.
Nikita Mazepin is Blue-Flag Sexual. He is attracted to blue flags.
Someone/something that is so extremely sketch that it is beyond the classification of a red flag.
Originates from the railroad practice of using blue flags on trains to signify to people that a locomotive and anything connected to it should not and cannot be touched by anyone other than it's crew.
Guy 1: "Bro, I just started reading Burrows and Mark is so fucking hot."
Guy 2: "Don't bother, he's a blue flag."
A fag hag, in gay slang, a woman who associates either mostly or exclusively with gay and bisexual men.
Blue flags are frequently stereotyped as outgoing women who are seeking a substitute for heterosexual relationships, or who are secretly (or openly) sexually attracted to gay men. In fact, many women who identify as blue flags are already in romantic relationships, either with straight men or with women, but seek out the alternative experience of socializing with gay men.