In reference to the murder scene in 'Dial M for murder' As you have seen on the screen the best way to do it is with a scissor.
Alfred HitchcockDrama is life with the dull bits left out. There is no terror in the bang, only in the anticipation of it. I believe in putting the horror in the minds of the audience, and not necessarily on the screen. The length of a film should be directly related to the endurance of the human bladder.
Alfred Hitchcock