using System;

public class Test
{
	class RandomName
	{
		private object _locker = new object();
		
		public RandomName()
		{}
		
		public void LockThread()
		{
			lock (_locker)
			{
				lock(_locker)
				{
					Console.WriteLine("WTF????????");
				}
			}
		}
	}
	
	public static void Main()
	{
		RandomName rn = new RandomName();
		rn.LockThread();
	}
}