The red flag meme is used by social media users who flag personality traits or behaviors they consider problematic. People have been posting their views followed by a number of red flags on ...

The red flag meme’s meaning isn’t super deep, but it will make you laugh. In fact, the trend is all about cracking jokes with the tweets containing some very non-traditional warnings.

Red flag meme: What is Twitter deal-breaker trend and what does it mean? Airline Ryanair says ‘clapping when the plane lands’ is red flag behaviour . Chelsea Ritschel. New York.

Others expressed worry about the kinds of content that people were posting as part of the meme. "These red flags a bit personal," Twitter user @Muhasaaa said in a tweet that has over 193,000 likes.

Twitter has been full of posts with red flags, with the trend gaining huge momentum over the past week. Newsweek explains the meaning behind the new meme.