It's been said for the most part, but inserting yourself into someone's RP, is one thing. Imposing your will upon another character in such away that it affects them permanently (i.e. Death) or in ways that make you feel uncomfortable without their consent is god-moding.
Going to use Val as an example =P
"Gharen Wolfsong throws a left hook, the punch lands firmly on Val Nunh's nose with a satisfying crunch, breaking it."
This is an example of me imposing my will upon Val's Character in a couple of ways. I've decided that I've hit him, taking away his ability to dictate whether his character dodges or not and second I've decided for him that I've broken his nose.
So by taking away your choice in the matter, this individual was imposing their will upon you and the individual with you, while things worked out in the end you have the right to say "No."
Communication and permission is key.
Going to use Val as an example =P
"Gharen Wolfsong throws a left hook, the punch lands firmly on Val Nunh's nose with a satisfying crunch, breaking it."
This is an example of me imposing my will upon Val's Character in a couple of ways. I've decided that I've hit him, taking away his ability to dictate whether his character dodges or not and second I've decided for him that I've broken his nose.
So by taking away your choice in the matter, this individual was imposing their will upon you and the individual with you, while things worked out in the end you have the right to say "No."
Communication and permission is key.