MemeGenerator Program

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MemeGenerator
{
    class Program
    {
        static void Main(string[] args)
        {

            Random r = new Random();

            bool done = false;

            while (done != true)
            {
                Console.Clear();

                Console.WriteLine("Type 1, for a normal meme");
                Console.WriteLine("Type 2, for a retarded meme. Ps if this meme made sense try again");
                Console.WriteLine("Type 3, for random words");
                Console.WriteLine("Type 4, for multi memes");
                Console.WriteLine("Type 0 to exit");
                Console.WriteLine("This can't be blank");

                string input = Console.ReadLine();
                if (input != "")
                {
                    int choice = int.Parse(input);

                    switch (choice)
                    {
                        case 4:

                            List<NormalMeme> multipleMemes = new List<NormalMeme>();

                            for (int i = 0; i < 5; i++)
                            {
                                NormalMeme singleMeme = new NormalMeme();
                                multipleMemes.Add(singleMeme);
                            }

                            Console.WriteLine(multipleMemes[0].CreateMeme(r));
                            Console.WriteLine(multipleMemes[1].CreateMeme(r));
                            Console.WriteLine(multipleMemes[2].CreateMeme(r));
                            Console.WriteLine(multipleMemes[3].CreateMeme(r));
                            Console.WriteLine(multipleMemes[4].CreateMeme(r));
                            Console.WriteLine("press 'enter'");
                            Console.ReadLine();
                            break;
                        case 3:
                            RandomMeme meme3 = new RandomMeme();
                            string generatedMeme3 = meme3.CreateMeme(r);

                            Console.WriteLine(generatedMeme3);
                            Console.WriteLine(".");
                            Console.WriteLine("press 'enter'");
                            Console.ReadLine();
                            break;

                        case 2:
                            RetardedMeme meme = new RetardedMeme();
                            string generatedMeme = meme.CreateMeme(r);

                            Console.WriteLine(generatedMeme);
                            Console.WriteLine(".");
                            Console.WriteLine("press 'enter'");
                            Console.ReadLine();
                            break;
                        case 1:
                            NormalMeme meme2 = new NormalMeme();
                            string generatedMeme2 = meme2.CreateMeme(r);

                            Console.WriteLine(generatedMeme2);
                            Console.WriteLine(".");
                            Console.WriteLine("press 'enter'");
                            Console.ReadLine();
                            break;
                        case 0:
                            done = true;
                            break;
                    }
                }
            }
        }
    }
}