He(Hagrid) seemed numb with shock at the verdict.
"S'all my fault. Got all tongue-tied. They was all sittin' there in black robes an' I kep' droppin' me notes and forgettin' all them dates yeh looked up fer me, Hermione. An' then Lucius Malfoy stood up an' said his bit, and the Committee jus' did exac'ly what he told 'em...."
Does the singular noun "bit" mean "ideas"?