Go thou to thine local Walgreens, Eckerds or other mass-market pharmacy, and looketh in the Easter Goods section for the fluffy white Cadbury bunny guarding a nest of shining, foil-wrapped eggs. If you presseth its paws, it clucks. It says "Buk, buk, buk."

However, the fine distinction between a labiodental fricative and a bilabial stop is lost on its widdle circuitry. If you don't know your linguistic jargon, sufficed to say, it does not say "buk, buk, buk." Close, though.