Talking up a storm!

Connor has been talking a lot for a while now, but it wasnt until recently that we actually were able to understand some of that verbage. He is starting to say 2 or 3 words together now like, COOPER BARKING or Pooper baakeen as he says it. He says this a lot because well... Cooper is always barking at something! However annoying it may be, I love hearing Connor say this so it isnt that bad! The other word that he says that cracks us up is SNACK. He will go to the pantry, point to the door and say...NAAAAAAAAAAACK. Seriously it goes on forever. He definitely has that southern draw for sure! Ha! This weekend he did start saying a word that isnt quite as cute, the word NO. My worst fear. As much as I have thought about how I needed to limit my use of this word, it is so hard to get around it. How do you communicate that you dont want them to do something other than to say no in a sentence? I am sure there are ways, but I am just not as capable. Right now as we speak, Connor is pressing buttons on the computer. He knows not to do this and what was the first thing that came out of my mouth? You guessed it, "NO Connor". Anyway, Connor now says NO all the time. It is a good thing when I am trying to figure out what he wants to eat, etc. However, sometimes he will tell me NO in a mean way and well, that just isnt acceptable. I am trying to tell him not to do this, but how do you help a 20 month old distinguish between when he should or should not say it. Oh the trials of motherhood...