Pucker up, Beyhive!! Beyoncé dropped a cryptic teaser Saturday for “Lemonade,” a “world premiere event” airing 9 p.m. next Saturday on HBO. The 20-second clip, posted to the singer’s YouTube and social media accounts, has Beyoncé in tight braids and a brown fur coat ever so slowly lifting her head into view. The video dramatically cuts to black before she shows her face. “What am I gonna do, love?” she breathes in a voiceover. The always mysterious singer’s announcement makes sense in light of an odd trio of captionless, lemon-related photos she posted Sept. 20: one of her happily sniffing a fresh lemon, another flashing a goblet of yellow drink, and a…