How David Lynch uses film techniques to portray ordinary life as nightmarish?

David Lynch portrays ordinary aspects of life such as being born as nightmarish through several techniques. At the beginning, the characters movie twitchy and comfortable ways as well as violently and aggressively leading to an unnatural feel. The colour tone and overall look of the picture is also established as murky, dark and hard-to-define, and the characters wear expressive pasty white makeup resulting in a dream-like or nightmarish feel. It's also important to note the manipulation of sound, it creates a sense of fear and threat as the sounds are peculiar and not usually heard; the abnormality of this enhances the discomfort. The parents  are also barking like animals - these primitive emotions add to the abstract nature of the film.

Further on in the film, we see the reduction of parent-child relationships to simple gestures, juxtapositions of bodies and understated movements as well as the fact that there is no dialogue aside from then word 'mutt' which makes the overall tone miserable and isolating - the boy is just trying to please his parents (another ordinary aspect of life) but they only shout at him. The unchanging soundtrack at this point adds of feeling of being confined and lost, adding to the nightmarish feel. The lighting is also important as it is underexposed and dark, leaving some aspects of the frame hard to see and appear shadowy. The monotonous drone that plays in the background also adds a sense of disorientation. Overall, all these techniques portray ordinary aspects of life as nightmarish.