red flag

a sign or warning of any impending danger, disaster or doom

when my gf called me up that day and gave me the "we need to talk" line, a red flag obviously came up and I figured I'd soon be on the outs with her.

by Bungalow Bill November 18, 2006

red flag

1. a warning sign

2. subject to a warning

A funnel cloud is a red flag for the formation of a tornado.

by The Return of Light Joker October 16, 2009

red flag

a bad sign of what’s to come

I think the first red flag was when my supposed date started lying to me a lot.

by nlolhere June 29, 2020

red flag

Stopping what you're doing because because something has made the environment unsafe. Derived from the racing flag that is used to stop a race because of unsafe conditions.

"We're red-flagged at this gas station because it's snowing too hard for us to be able to go on."

by D2RCR February 1, 2004

red flag

this mf

red flag

by leannajlfowlee November 15, 2021

red flag

The traditional color flag of the Blood gang

Dave:Look at that Krab with his blue shit!
Ed:Yeah us Bloodz wear that red flag til we die!

by Jasmine C tha G January 7, 2006

red flag

term used to cut someone off from drinking for the night.

(girl stumbles around and ends up puking on someone's shoes at a party)
Some Dude: YO, That bitch is red flagged! Get her outta here.

by meeeeecrock February 1, 2007