The Ides of March marks the 15th day of the month when Julius Caesar was killed, and it has fallen on Thursday this year.
In 44 B.C. the Roman leader was stabbed 23 times to his death, causing the annual event to arrive with superstition and the warning, "beware the Ides of March," from Shakespeare's "Julius Caesar."
Ahead of Caesar's assassination, "Ides" was a term describing the middle of the month. Following his murder at the hand of Marcus Brutus and other conspirators, the date became shrouded in superstitious beliefs and the warning to watch out for backstabbers.
Twitter users are remembering the ominous day in history by posting messages about the Ides of March, which has become a trending topic on the social media site Thursday.
"Why yes, it is the Ides of March. Thanks to Shakespeare, I'll beware today," wrote Chad.
"Beware the Ides of March … someone always seems to get stabbed in the back on March 15," posted Twitter user Paul.
Julie joked, "Beware of the Ides of March! Especially [if] ur names Caesar…"
Trista pointed out that the March 15 holiday is little-known.
"It's weird to me that 'Beware the Ides of March' is trending because there's no way that many Twitterers even know what it means," wrote the Twitter user.
Greg posted, "When they say 'Beware the Ides of March,' what they really mean is 'Beware [of] being stabbed 23 times,' Which is actually good advice everyday."
Last year, George Clooney, Philip Seymour Hoffman, and Ryan Gosling starred in a movie titled "The Ides of March." The film follows a staffer on the campaign trail that is introduced to corrupt politics.
Of the film, Twitter user Jim wrote, "Beware the Ides of March! I hear it was a terrible movie."
Marty added of the Clooney-directed film, "Ides of March- 2/5 Clooney couldn't prevent himself from preaching his simplistic views and then forgot to write a believable story."