If you have a drink in your right hand, anything eaten with the other hand has no calories. Several principles are at work here. First of all, you’re probably standing up at a cocktail party (see “Food on Foot”). Then there’s the electronic field: a wet glass in one hand forms a negative charge to reverse the polarity of the calories attracted to the other hand. I’m not exactly sure how it works, but it’s reversible if you’re left-handed.