I'm pretty much a non-looter to the extreme under normal crcumstances. And will go out of my way to corpseguard and be respectful and try to RP after killing (and dying!) and all that.
If it's just a "What the hell, man shit!", I'll probably try to laugh it off with some RP and hope for the best..
But if it's a "Fuck you you piece of shit shove it up your ass dickwad" while I'm standing next to their corpse trying desperately to find an IC reason to continue to do so, it's an immediate B. There is no excuse for an attitude like that. I've only done that like once ever though and I must admit it left me with a bad taste in my mouth. But I don't think someone like that should be playing this game until they learn acting like that is not how things are going to work :(.
Similarly, if my dog jumps up on the counter and eats my dinner I'm gonna smack him with a belt and lock him outside for the rest of the night, not just ignore him or tell him "bad dog" and be done with it. Gladly, I've never had to do that though :).