A scene from my day:
Treefrog (crying, mouth open, blood dripping down): What happened to me?
Me: Well, you busted your lip when Fish jumped on you. (checking teeth to make sure nothing else is wrong) Why don't I get you an ice cube to suck on? That will make your mouth feel better (inwardly sighing of relief that nothing else is wrong besides the busted lip).
Treefrog: I want ice cream.
Me: . . .
Yes, he got ice cream. So did Fish. The rewards/punishments for injuring here are, I think, pretty darn good.