In the throes of a heated argument, siblings retreat to their separate bathrooms for solace. The sister, irritated and horny, strips and begins to pleasure herself under the hot spray, her big cock brother unknowingly joining her. As he enters, she freezes, caught with her legs spread, pussy dripping. Instead of fleeing, he pauses, taking in her naked form, his own cock hardening at the sight. She challenges him, "What are you waiting for, brother? You've seen it all now." He steps closer, his massive cock bobbing, ready to answer her challenge.