since with sally

When you put a x under a glass of water you can see it from the top, We can't see it from the side.

When you put your finger in a glass of water your finger looks fat. And water is a magnfier. 

When we have a glass of water and you put water in it and but don't full the glass up then get corns after put the corns until it fills up the cup. Until it over flows.