not by the hair of my chinny chin chin

Not by the hair of my chinny chin chin is a cliche which was originally started in the nursery rhyne The Three Little Pigs. In the story, the pigs say not by the hair of my chinny chin chin as a way to say not ever, not now, no way. It is another way of telling someone no in a blunt and straightforward manner, and in this case; a way which is appropriate for a childrens story and enticing to small children but still makes sense to others.