Here's a bar trick that is very hard to do unless you know the secret. Place a small coin on a business card and the business card on a bottle. Now remove the business so that the coin falls into the bottle. business card trick. Unless you know this business card trick it is very hard to figure out. Make a bet and you can win with this business card trick. You can find more bar tricks with business cards at http://easybartricks.com
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. We have huge collection of bar tricks - all the bar tricks are free and presented in video. Business card Trick.