2TALK TO somebody informal to talk in a noisy and annoying way 哇啦哇啦地说个不停;瞎扯
Some guy was yapping on his cell phone.
有个家伙在哇啦哇啦地打手机。
Examples from the Corpus
yap• It was one of those little rats on leashes that lead women around Paris, yapping.• They were small and they yapped.• Jennie always had two of the same breedyapping away in her office.• Then up again, yapping excitedly.• Lorton opened the door, and the dachshundrushed in, yapping furiously.• These lackeys of bourgeoiscriticism can yap in vain.• Some guy was yapping on his cellphonebehind us.• Six foot high and floodlit, they winked, mewed and yapped when the door bell was rung.