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1)When you are in front of a crowd of people performing (Preferably playing Metallica) and you want the crowd to clap.

2)If your having a good time and want to let every one know it.

It also should be yelled and with a continuous clapping motion over the head.

From the Latin: "Let's clap" and the German: "Yo"
1) "Let's clap YO!!!"

2) "I'm really drunk!! Let's clap YO!!!!"

3) I'm going to go sink the dink, Let's clap YO!!!"
by OKGO! January 04, 2010
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