Honestly, if you wanted to trick a mob, this quote would work really well. When that mob rolls up with all the liberated tools, ready to do some rapid dismantling, you could chuckle patronizingly. "Now, aren't those the *master's* tools? Well, you can't use *those* to dismantle *this* house. It's the master's house, himself! Those tools won't work for the task at hand -- everyone knows that!