-how to do it? -cover the full glass with a piece of paper, quickly turn it over, and then carefully pull the paper out from under the glass)))). - pour water on the table, warm the air in the glass, for example with a match, then put the glass on the table. the water will draw in on its own. -freeze water in a glass, turn it over and put it on the table. part of the water will melt (as can be seen in the photo) and half of the water will remain in the glass. - you drill a hole in the table, pour water into the glass through it, then move the glass to the side.