This or that is a choice made between 2 products or ideas that the person before you proposed, you pick one of those products, then you post 2 products that are your own idea, then is repeated.
Here is an example...
Person 1: Pepsi or Coke?
Person 2: Pepsi
Playstation or Xbox?
Person 3: Playstaton
Dog or Cat? and so on...
Also, lets try and not repeat what happened in the last one...
Start
Up or down?