Sentence:  I went to her, sat close beside her and tried snuggling up a little. It worked. . . . "I can get them," I said just as <WSD>flannel-mouthed</WSD> as ever I could, like all of us talked to her now. 
Meaning of the word marked with <WSD> tags:  Smooth and persuasive in speech, especially in order to deceive or manipulate.