There's a class of nine- and ten-year-olds, and half of them are in hysterics because they think Abby has said something wildly funny, and the other half are yelling at her for saying something offensive.
uma turma de crianças de nove e dez anos, e metade dela está histérica porque acha que Abby disse algo muito engraçado, e a outra metade está gritando com ela porque ter dito algo ofensivo.