I let characters narrate some outcomes, especially if the outcome is very definite: the PC very much got the local doc into the sack, very much killed the local doc, etc. Rather than narrating yet another NPC death (or seduction), I hand it over to the player to say how it happened.
How would this work? I mean, everyone is at the table talking and “to do it, do it”. So something happened between doc is alive and killing the doc and doc is dead.
I mean the player didn’t just narrate, “so I killed the doc” or even, “I go to the doc’s place and I jab a meat hook into his brain pan because he let my brother die”. There had to be more happening in the fiction, yeah? Something happened.
So it probably looked more like:
Player: I go to the doc’s place with a meat hook. I’m gonna kill him for letting my brother die.
MC: okay, do you say anything to him or just stab him from behind or what?
Player: I want him to know why so I say…
See? There isn’t really anything for the player to narrate because we are all there participating in the conversation.
Unless the MC asked, “why did you kill the doc?” and the player answers, “he let my brother die”. But even then the MC can’t say what the character did! The player could say, “I didn’t kill him” and then the MC could respond, “well Bish thinks you did and he is at the bar with a gun pointed at your head and yelling at you”.
None of that is
narrating an outcome. Although some of those examples did very much Cross some Lines.