It’s a freight train careening down a mountainside, a meteor screaming down
through the atmosphere. Riveting, enthralling. Forces too powerful to control 
send them hurtling ahead. Once isn’t enough. A dozen times isn’t enough. They’re
at it for hours, till they’re drenched in it, till the air around them reeks of
it, till the only thing left to breathe is the smell of it, the thousand humid, 
musky scents, mingled and mixed together till the odors seem born not of two 
bodies but of one.