Okay, most people know this game, but to all those who don't...
Say we have this question.

________________________
Pen or pencil?
________________________


Then the replier would say which ever he/she prefered, like...

________________________
Pen
Pepsi or Coca-cola?
________________________
Then the second replier would say, like...

________________________
Pepsi
GBA or PSP?
________________________

And It'll keep going like that.

I'll start.

Sonic or Shadow?