Hidden from prying eyes, the siblings succumb to their carnal urges. Michelle, her breath hitched, takes her brother's virgin cock deep into her mouth, savoring the salty pre-cum. He responds, his hands gripping her hips as he thrusts into her from behind, their bodies slapping together in a rhythm that echoes their pounding hearts. They're lost in their passion, oblivious to the world outside, until a creaking floorboard brings them back to reality, leaving them breathless and guilty.