polymorphism.cs

public abstract class Human {
  public abstract void GoPee();
}


public class Male : Human {
  public override void GoPee(){
    console.log("Stand Up");
  }
}


public class Female : Human {
  public override void GoPee(){
    console.log("Sit Down");
  }
}

// usage
/*
  foreach(var person in audience){
    person.GoPee();
  }
*/