An Alternative Ending

Believing I was alone, I began pleasuring myself as my amazingly attractive stepsister Genevieve unexpectedly enters and catches me in the act! The situation turns highly awkward, and she exacerbates it by teasing and ridiculing me. However, things take a more exciting turn when she commences taunting me with her ample rear and later proceeds to orally pleasure me! I am astounded; being a geek, I never imagined this happening, yet she doesn't seem to mind, as she eagerly engages in intimate activities with me. She even permits me to ejaculate in her mouth!.