Zucker Sucker
Someone who spends practically all their time on Facebook. (Originating from the name of Facebook's founder: Mark Zuckerberg)
Guy 1: "Are you still on Facebook?!"
Guy 2: "Just gotta refresh the page.."
Guy 3: "Oh dear, another Zucker Sucker"
Guy 2: "Just gotta refresh the page.."
Guy 3: "Oh dear, another Zucker Sucker"