"Hey, Boo.  Think you can stack these 12 regular nails - on top of this nail, that I have secured in this plain block of wood?"

Yeah, Boo and I both knew this was probably a set up.  But, our favorite neighbor was up to the challenge.  She tried various ways of stacking, before saying "No, Bennett.  I can not stack these 10 nails.  But, I bet you are going to show me that you can."

Of course he can.