I actually don't mind the no... it is the tone and defiance that comes with it...
I ignore when I can, pick up and carry when I can (and ignore the cries), get eye to eye and say "do not speak to mummy like that" or even sit him on time out. Seriously people I WAS hoping the terrible twos was it and I was going to get the lovely threes (okay I do have five more weeks then it will be lovely threes).
What are you doing or did you do at these stages to get through with a calm mind (yes I am going back to yoga) and laid back attitude? DO SHARE!