while the reverend 's making another pitch , i nip into the cabin , put on a white apron and a child 's bonnet , and pop back to give a testimonial : `` oh , good people , onc't i was a very bad little girl-would n't mind my elders , took fits , sayin ' swears , but ever since my mama started givin ' me a teaspoonful a day of captain jack 's all season tonic and elixir , why , i 've been good as any angel ! ''