[slur]

Not a serious question, but let me humor you with my argument. Putting ketchup in a cup is already too far and you should pause your life and reflect on what made you to be this. Ketchup isn't supposed to be in a cup. You either put it on the food you are eating or put it on the side.

Why should the ketchup should be in a cup, its not a drink lollllllll

because it's liquid and if you put it on a plain container it wouldn't fit. Did you study about masses solid, liquid and gas?

"Not a serious question"