You could take the Michael O'Leary approach and jsut talk complete bollocks, on the grounds that that is what they are going to write anyhow.
Michael Gambon, the actor, once claimed that he used to be gay. He had to give it up, he said, because it made his eyes water. He told another interviewer he'd started his career as a dancer in the Royal Ballet. He had to give that up as well, after he fell off the stage.
Or, of course, there is the Matt Damon approach which is to give interviews of such mind-boggling dullness, that very quickly journalists stop calling at all.
Good luck, whatever approach you choose; personally, I'd be inclined to say that you bumped your head during the incident and can't remember anything at all.