If the tip was a dime in one glass, the waitress, in her haste to get the table ready for the next customer, would pick up the glass, the water would spill out, and that would be the end of it.
What did you do with my glasses?
Don't touch the glass.
What about a glass of beer?
I can't find my glasses.
I broke a glass.
There is a crack in the glass.
A plastic glass is better than one made of real glass.
Where are my glasses?
To the white glass, I added glass of various colours, producing a pretty feel.