Old news 

Piss the other party off, by saying "Old news".
People saying "Old news" refer to the fact that they already know what you were trying to tell them.

Originated by Vexiant.

Guy 1: Yo.. check this out (sending a link)
Guy 2: Old news, bro.
Guy 1: Ahh... Fuck you!

Old news by Vexiant March 10, 2012

Old News Feed 

When someone brings up information about a Facebook status, profile, or update, which is at least 3 days old.

Don: Did you hear about Franks mom?

Paul: Man, that's Old News Feed, she's always been hot.

Old News Feed by mysocialsecuritynumber50528557 January 25, 2012

How old is your newspaper? 

A substitution for ' You are sooo~ left out.", to tell someone that what they were saying was old news.

Henry: "Hey, I heard Mark is going out with Cathy. Is it real?"
Rick: "Dude. How old is your newspaper? That's 3 months ago. He's going out with his side chick Sabrina now."

How old is your newspaper? by hugalahugalalolo777 March 6, 2016