Noah has become quite the negotiator.  When he wants to do something that he thinks we may not agree to, he mumbles the word softly.  As a result, the adult concentrates hard to figure out the word and repeats the word.  Noah then says okay  At that point, he has trapped you!!!!  You can see the look he gives during these conversations in this picture.  The conversation went something like this.  Noah: " big slide."  Moma: "Did you say big slide?"  Noah: "Okay."  (As if it was my idea all along).