We're not sure if breaking out into Beyoncé's dance moves in the middle of a public tennis match violates some sort of bro code. In most cases, hearing Bey's lady anthem will send the most reserved individual into a fit of instant wrist-flicking. Besides, if these groomsmen can dance to "Single Ladies" during a wedding (and totally kill the routine, BTW), then we have no choice but to give Justin and Jimmy a pass in advance.
Fortunately, no pop stars, black leotards and pumps were harmed in the process of this impromptu dance breakdown.
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