Nathaniel said No!

My son has finally said the dreaded "No!" to me :-( It wasn't an angry No, just him stating how he felt about getting a diaper change. Frankly I'd rather say no to diaper changes too, but I think we have a ways to go before we potty train. He has been shaking his head no (and yes) for months, but apparently the words are catching up as well. I wonder when I'll hear "Yes,Mom?" Something tells me that will be much harder for him to learn.