If I get into an argument with someone online or IRL I will feel absolutely terrible for hours on end afterwards. Pure adrenaline and anxiety coursing through my veins until I placate myself at their feet.
I think I have an earthworm's genetic code mixed in with the human stuff.
(Privately, of course, I indulge in fantasies of violence against obnoxious people I cross in the street - nothing too torturey, just blapping them upside the head with my fists in front of a crowd of admiring lingerie models)