Honest. It's almost always best to go with honest. It means you never have to worry about getting your story straight.

...you look like you fell out of a crazy tree and hit every branch on the way down.

The last time I was at a supernatural shindig, I got poisoned and then everything there tried to kill me. So I burned the whole place to the ground.

Over the course of many encounters and many years, I have successfully developed a standard operating procedure for dealing with big, nasty monsters. Run away.

I could buy that she would murder me in a fit of rage, poison me out of flaming jealousy, or bomb my car out of sheer, stubborn pique. But she would never do it and feel nothing.

My head was throbbing, and my hands were shaking, but I went down the ladder to my workroom - and started figuring out how to rip someone's heart out of his chest from fifty miles away. Who says I never do anything fun on a Friday night?

Time after time, history demonstrates that when people don't want to believe something, they have enormous skills of ignoring it altogether.