THEM: i'll take the hats and balls.  YOU: how about no. you can have 2 hats and 1 ball  THEM: 2 hats 1 ball and one book.  YOU: no you get 2 hats and 1 ball  THEM: i cannot accept.  YOU: you get 2 hats and 2 balls my final offer you didnt even want the book to begin with.  THEM: deal!