Basically, I've seen this game played on other forums and it's kind of fun to see the ideas people have and helps people know each other a little better.
Anyway, the rules are pretty simple. You need to think of two related things, and the next person has to decide which one they would prefer. They don't have to give a reason but it'd be nice if they did. Then, they think of another two things and so the game continues.
So, I'll start
Coke or Pepsi
(the next person needs to choose one and then think of two more things)