The siblings' bodies glisten under the harsh bathroom light, their breaths ragged from arguing. Michelle's eyes drop to her stepbrother's crotch, his cock tents his boxers. She licks her lips, her pussy throbbing. She reaches out, tracing the outline of his dick. He hisses, his hand covering hers. They look at each other, the air thick with tension. 'Fuck it,' Michelle whispers, pushing him against the wall. She yanks down his boxers, his cock springing free. She strokes it, her other hand slipping into her own panties. They're both so turned on, their bodies grinding against each other, craving release. Michelle guides his cock to her entrance, but a sudden noise outside the bathroom freezes them, their hearts pounding in their chests.