The tension in the room grows thick as your son continues to pleasure himself on your lap, his breathing becoming more labored with each passing moment. You find it hard not to react, feeling the heat radiating off of him and the tightness of his body against yours.
After what seems like an eternity, he finally lets out a hoarse cry and tenses up in your arms. He shudders violently as waves of pleasure wash over him, and then slowly begins to relax again, leaning heavily against you for support.