I think you mean running rampant, becuase if it was the former then you just said they run fast spreading rumors, which could be true and funny to see.
Ian mcyintyre asks BB if he likes russian players, gets his response, than sprints out of the room to make a guest appearance on the Donnie and Dhali show.
running rampant spreading rumors means. they are spreading rumors with disregard whether they are from good sources, or even might mean made up rumors.