using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var list1 = new List<string>(){

            "wow",

            "cool",

            "radical"

        };

        DamnIt(list1);

        Console.WriteLine(list1[0]); // Would expect noooo

    }

    public static void DamnIt(List<string> l) {

        var list2 = new List<string>(){

            "noooo",

            "not nice",

            "darn"

        };

        l = list2;

    }

}