A Yerda, in terms of the chelsea football clubfanbase on Twitter, refers to one that promotes the use of younger, academy players at Chelsea, as well as the squad players being mostly English internationals.
Why am I being called a yerda? All I want is for Gallagher to have a chance, as well as Mason Mount to be our clubcaptain!
An action under the same category as namedropping - used to describe the case where a person uses any rare occasion to mention a specific year with the purpose of sounding a bit superior.
Generally used by douchebags or academic hipsters.
Bill: "Oh, remember to backup the computer before doing anything, right?"
Steve: "Don't mind that, I got TimeMachine - automatic backup since 1997"
Bill - (darn, I hate when he's yeardropping my ass)