Use the Force

Student: "Can you get me a book?"

*At this point I am all the way across the room from the text books.  I stretch out my arm as far as it will go.*

Me: "Sorry, I can't reach them."

Student: "Use the force.  Pull the book over here."

*I stretch out my arm again*

Me: "HGGGGGGNNNNN.  Nope, still can't get it.  Looks like you have to walk over there yourself."