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 04, 2005
Something your girlfriend or wife would tell you if she's on menstrual period
Stop it bob, I'm on red flag!
by moshahriz October 30, 2015

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