Answer:
Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?
What can you fill a room with that takes up no space?
Railroad crossing without and cars can you spell that without any R's
What goes up and never comes down?
What is the only question you can't answer yes to?
I have a few points but we're not competing. I'll help you win when you're eating. What am I?