The air is thick with tension and unspoken words as the siblings face each other, their bodies aching with desire. Emily breaks the silence, "Let's play a game. Whoever says 'stop' first loses." Jake swallows hard, his cock twitching in his pants. Emily reaches out, unbuttoning his shirt, her fingers tracing the lines of his muscles. She leans in, her breath hot on his ear, "Who's next, Jake?" He groans as she grinds against him, feeling his hardness. "You are," he manages to say, flipping her onto her back, ready to claim his prize.