CrazyType.cs

using System;
class CrazyType
{
    private int _value;

    public static implicit operator CrazyType(int value)
    {
        return new CrazyType { _value = value };
    }

    public static implicit operator int(CrazyType value)
    {
        return value._value++;
    }

    private static void Main(string[] args)
    {
        CrazyType a = 1;

        if (a == 1 && a == 2 && a == 3)
        {
            Console.WriteLine("YAY!");
        }
    }
}