Source: Fred Newman, author of MouthSounds (R111, with CD, Kalahari.net)
By MH Staff - Posted on 28th August 2011
Perfect for sports games, calling your friend across the street or hailing your horse
Open your mouth and draw your lower lip tautly inwards to cover the top of your lower teeth.
Flatten your tongue and move it forwards so that it hovers above the inside edge of your bottom lip.
Touch the tips of your pinkie fingers together to form a 90-degree angle.
Nails upwards, insert the inverted V formed by your fingertips under the tip of your tongue. Roll the tip of your tongue upwards and back slightly; it should curve up towards the front of the roof of your mouth, without touching.
Take a deep breath and blow across the tip of your tongue. The harder you blow, the louder your whistle and the more people will look at you.