the flag of no quarter. used by pirates, the red flag was flown from the pirate ship when a merchant ship pirates were targeting offered resistance.

no quarter means that the pirates intended to take no prisoners.
some buster smoke up all my smokin' weed.

show him the red flag.

no quarter for dat sucka!
by zen December 1, 2006
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Statement used to mean that there may be someone listening to your conversation that should not be;
Potentially dangerous statement.
"So I told that bitch..."
"Red Flag."
"Anyway, how you doin?"
by Dave A. Jones May 4, 2005
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Something your girlfriend or wife would tell you if she's on menstrual period
Stop it bob, I'm on red flag!
by moshahriz September 17, 2015
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A 'red flag' is a term used to describe when somebody has a feeling that they are potentially dealing with a manipulative and/or possibly psychotic or sociopathic individual. It's usually used to explain a feeling after the fact.
It was a red flag when she told me that she had four kids from four different men.
by NotoriousBigG July 6, 2019
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Krow and Casey are the biggest red flags I’ve ever seen

Did you hear what krow said about Casey in art class? Major red flag
by Fuckkrowandcasey March 26, 2022
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A 'red flag' is a term used to describe when somebody has a feeling that they are potentially dealing with a manipulative and/or possibly psychotic or sociopathic individual. It's usually used to explain a feeling after the fact.
He didn't like Louis Tomlinson, I should've seen that red flag.
He dislikes Louis Tomlinson, you can't ignore that red flag, you have to drop him.
Stream defenceless, that is not red flag
by Idk every pseudonym is used February 6, 2021
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Verb: The state of a book or magazine after someone brings it into the bathroom with them, generally when dropping a deuce.
Dude, don't put that gun magazine back on my desk, you just red flagged it.
by Captain ASDF December 18, 2008
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