You're starting to freak me out, man. Every time you start one of these threads with song lyrics, I've always just been thinking about it. I was just listening to Bohemian Rhapsody. (SPOILER)Under Pressure is better.
I don't think I could kill someone without premeditation. As such, I'd probably have a set plan of what to do after the murder. Of course, I have no idea what that would be as I've never planned to kill anyone.