Forget Freud and his fancy-pants dream analysis -- when it comes to understanding what common factors in the human condition could bring about such a Lynchian nightmare, look no further than Thomas Hobbes. Hobbes brought the gavel down on this in his seminal work Leviathan (1651) when he stated that life is inherently "solitary, poor, nasty, brutish, and short." Frankly, life sucks for everybody, and it could end at any instant. Instead of making the most of our brief tenure on the planet, we're eating varying levels of crap as calendar pages rapidly fall to the ground. Like our teeth. With which we have had to eat all this crap. Or, you know, without teeth, your nourishment will be limited to McDonald's shakes and you'll die.
"Our milkshakes bring all the boys to the yard ... the graveyard."
It doesn't matter if you're doling out cologne in a strip bar bathroom or you're Elizabeth Dole, it's likely you'll be as toothless as Thomas Hobbes at some point in the dead of night.