The talking-without-moving-your-lips part is easier than you might think. For starters, you learn to grin like an idiot at all times. This serves the dual purpose of baffling your audience and stretching your lower jaw muscles, making it easier to keep them motionless. There are only six tough sounds--the "labials," or lip sounds, b, f, m, p, v, and w. Essentially what you do is substitute some vaguely similar sound, talk fast, and let people hear what they want to hear. For w, for instance, we substitute oo. "Where" becomes "oo-air," "twenty" becomes "too-en-tee," and so on. Eventually you learn to run the sounds together to more or less eliminate the extra syllable. For f we substitute a th as in think, making the sound barely audible and putting most of the emphasis on the rest of the word. Thus the sentence "Why is Willie feeling funny?" becomes "Oo-eye is Oo-illie theeling thunny?" You may think this sounds retarded, but we must have a positive attitude about this. There are other substitutions for other labials.
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