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a loud whistle sound that sounds cool and can make a high or low note.
place your hand on your other hand at a 90 digree angle.
put your hands in a cup position.make sure it is air tight.
make a thin opening with your thumbs and blow in the upper half of the opening with your botton lip at a 45 digree angle.
Life Hacks #1 Hand Free Door Openerby patatarium
Child's Whistle from a Drinking Strawby Phil B
Whistling with your fingersby norsehorse
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