September 23, 2009: On Glee, William McKinley High School’s football team distracts their opponents with the “Single Ladies” choreography, then scores the game-winning touchdown. To prove it, he briefly flashes the hand-wave (go to 7:14). January 18, 2009: Two days before his inauguration, Barack Obama tells Beyoncé that he’s done the routine for his family. The sketch co-stars Beyoncé, perplexed as to why three dudes have been cast as her backup dancers. The Highs November 15, 2008: Justin Timberlake dons a black leotard on SNL for the first-ever “Single Ladies” parody.

As millions adjust to this strange new world, Vulture looks back at the leading dance craze of the 21st century: the highs, the lows, the Liza Minnelli. After enduring nearly two years of nonstop tributes, parodies, lip dubs, and flash mobs, one understands why the singer might decide that, in the words of her husband, she’s off that. They ask for a $3 donation per class and if you are new to Bay Area Flash Mob, there is a one-time $6 fee to cover insurance costs. For this dance, Beyonce’s back-up dancers have some floor work, so please prepare by having knee pads for practice around the third week.Beyoncé is reportedly retiring her hand-waving “Single Ladies” dance routine, effective immediately. No time for class? Check out the tutorial videos at full speed and at 90% speed. These classes are progressive, and they’ll repeat what you learned in the previous class in that week’s second class.

Dyon Lain (aka Dyoncé) will be your teacher twice a week for six weeks. You’ll be able to dance this with the group at weddings and for marriage proposals, and of course, at the big flash mob sometime in December (date TBD). Get ready to learn the entire Single Ladies dance with Bay Area Flash Mob.

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