It's pretty funny to watch a guy pack up something he borrowed in the original box to give back to someone.  Not only will he pack up the item, but he'll neatly wrap up all the cords and even try to arrange everything in the original packing arrangement, including all the manuals... of which he's read none.  Because as we all know, man's law states that men shall never read the instruction manuals from anything.

However, what some people don't realize is that their is another part to that law.  Man's law also states that men shall never throw away an instruction manual.  If you go into any man's home, you will find not only instruction manuals from everything he currently owns, you'll even find instruction manuals from all sorts of things that he threw away years ago.  Anthropologists have yet to figure out this behavior.  It's one of life's great mysteries.