THEM: ill take the ball and books you can have the hats  YOU: how about i get the hats and the ball?  THEM: oh no i need the ball, and 1 book  YOU: if i can't have the ball i need everything else.  THEM: i need a book to go with the ball  YOU: you can have a hat.  THEM: the hats are worthless to me  YOU: fine. i'll take a book and 3 hats.  THEM: cool.