Don’t get me wrong, I love Euphoria’s unhinged teens and their equally manic sense of style: Maddy Perez’s on-speed “I’m a Genie in a Bottle” revival looks; Jules’s ethereal angel outfits; Kat’s Hot Topic-plucked cybergirl harnesses. But who really rocked my world in the season two premiere was Fezco’s grandmother. The woman, matriarch to East Highland’s resident drug dealer, enters our screens with a bang as Rue narrates: “Fezco’s grandma was a motherfuckin’ G.” Boom. The first scene cuts to Fezco’s grandmother, a woman with long platinum blonde hair who steps out of a light green Chevy in metal-tipped cowboy boots ready to kick someone’s knee in. She struts towards…