This little balancing act will wow everyone at the bar

This little water-based trick can be performed at the bar, at home, at a restaurant — anywhere, really.

You can balance a card on the edge of a glass, but the second you add weight to the end, the card falls. Bet your friends that you can add the weight and keep the card in place.

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You will need:

• A glass of water (about half full)
• A card (business card, credit card, whatever you’d like)
• A coin
• Some extra water