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In large group gatherings or discussions or groups or in a stadium or on a playground it will be difficult to call out your friend or the one you need to talk with by shouting there names....
and it will be very painful to shout which may not be that mch useful.....
so this video helps you out in tough situations like the above mentioned....
after watching this video you will be able to whistle at any one you want...
enjoy....:-)
Hehe... Cool but I wouldn't want to rip a bill :P
This is pretty neat, and nicely shown too. L

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