Nothing at all, why would I care if you ate a cookie.
I suppose I would care if it was my cookie you ate. However, that is unlikely, since I do not know who you are, and while it is possible that we have met and know each other, without any further information about you, I can only conclude that is not the case. Therefore, you eating my cookie is highly unlikely. So, in conclusion, I would do nothing at all as your eating of a cookie does not directly affect me in any way.
You see someone stealing food, but you can tell the person is broke and starving. What do you do?
I want my old avatar back...
I wonder if anyone will bother trying to read what this says.