Creating a no-no monster

I've been using the "no" word a bit more as Daniel gets into things and he definitely understands it because half of the time he starts crying, but the other half he says "no" back to me.  I captured this video just because it was kind of cute as he shook his head and wagged his finger, but we are going to find another way to "correct" bad behavior because having a just-turned 1 year old saying "no-no" back to me makes me fear for what we have in store during the terrible two's.