Instead of that long old tired clip from austin powers that plays when you deny a knife fight how about replacing it with the one from this video that starts at 2:45
http://www.youtube.com/watch?v=h7ApXmZcuug
Its far more simple, straight to the point and actually funny:
What a pussy, that simple
and upon winning the knife fight play one of the soundclips from it between 1:57 - 2:08 and 3:13 of that video at random.