Cardi B and Stefon Diggs have sparked online chatter after a viral video appeared to show the pair engaged in an apparent argument outside a Maryland cafe just days after a public Mother’s Day appearance together. Neither Cardi B nor Stefon Diggs has publicly addressed the viral footage. (AP Photo) The footage,shared by FearBuck on X, reportedly shows the two outside a coffee shop and gym in Burtonsville, Maryland, near Washington, DC. In the clip, Cardi is seen speaking expressively while Diggs leans back against the vehicle with his arms crossed. A source told TMZ that the ‘argument’ lasted for around 10 minutes, adding that it did not escalate into a major public disturbance. However, security reportedly intervened to turn away fans who attempted to approach Cardi for autographs during the scene. At one point, a man accompanying Cardi is seen stepping in and placing a hand on her in an apparent attempt to calm the situation. Context unclear TMZ also reported that a bystander claimed Cardi was overheard saying, “That bitch is messy,” though …