Extension methods are interesting

Not my idea, but it amused me. Thanks Dave.

namespace ExtensionMethodsAreEvil
{
    class ExtensionMethodsAreEvil
    {
        public static void Main()
        {
            string myNullString = null;
            Console.WriteLine("Is the string empty? " + myNullString.IsNullOrEmpty());
        }
    }

    public static class ExtendString
    {
        public static bool IsNullOrEmpty(this string s)
        {
            return string.IsNullOrEmpty(s);
        }
    }
}