Or you are too stupid to understand what I am trying to fucking tell you you little twat. Let me explain my fucking self for you, motherfucker.
How is that for name calling?
Now, let's get back to the point. The glass is initially empty. When you pour liquid to the cup, your friends or people in general don't say, it's 7/8 empty, they would say, it's a quarter full, or half full or completely full.
Second, point, if you are drinking from it, they will say, it's a quarter empty or half empty or once you finish drinking it, they will say it's completely empty.
Take your car for an example, you put gas in it. the tank becomes either half full or completely full. Then after you drive it, it goes to half empty or completely empty.