Both Weiss and Nora had been busy. Weiss with the gelato shop and Nora with Thor leaving town then coming back. So it was up to Qrow to get some food. He wasn't a fan of grocery shopping however, so he just ended up getting a bunch of frozen dinners and snacks.
Soup sounded good as well, so he went to get some. He definitely wasn't clumsy and he didn't really even grab the wrong can. His Semblance was acting up again and so that's what he figured caused all the cans to fall. Before he could react, there was a blur and someone had caught all the cans before they even hit the floor.
"Uh, yeah," Qrow replied, a bit surprised at first. "You're pretty fast, kid."