When you Say "No", it means no

Self-chastisement has gone to a whole new level with Dominic. A few months ago he started saying, "no-no" before he touched forbidden items. Then it moved up to saying "no-no" and wagging his pointer finger. Just recently, though, he has started hitting his own hand with his other hand! This, of course, is in addition to the ever-dramatic "no-no" and finger wagging that he continues to do.

While Matt was unloading the dishwasher I overheard a sweet little voice saying, "no-no" "no-no" and then an angry, "NO! Dominic, that can really hurt you". Dominic likes to "help" put away dishes, including fragile items and sharp knives. I hear a little pouting from Dominic. Then the sing-song, almost mocking, "no-no" "no-no" starts in again. About a minute later I hear Matt, "Dominic, when you say "no", it means NO".

Isn't it usually "When I say no, I mean no?"