This cup is UNSPILLABLE !!!!! WTF !!!!!!!

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Instead of looking silly slapping the thing, why doesn’t he describe how it works?

Some idiot slapping a cup squealing like a little girl doesn’t convince me that this cup does what it claims.

I vote strong electromagnet under the table, turned on/off at will.

I can’t even be bothered to go find out how it actually works.

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