Wouldn't it be great if we had the ability to access a parallel universe where we can meet our opposite? Imagine the activities with the boy/girl version of you. Sex, making people think you guys are twins, sex, talk about interesting things about your own universe, sex, finding out the exact opposite of the events that happened in their world, sex, the difference of how their world functions, sex, exploring your opposite's body, sex, and did I mention sex?