Imagine this scenario: You meet yourself one day, but from a parallel universe. The only difference is that you in this parallel universe are of the opposite gender, just like all things in this universe. Your mother is father, your father is mother, etc. What is the first question you would ask yourself?
As for me ,I would ask him a question of life and death, without the answer of which I would not be able to move forward in life: "Hey handsome, have you ever played Super Mariana sisters from Nintenda?"
