Does one pull out or drain your fertile nut deep

Okay...so you couldn't resist the urge to view your phase-sis naked. It starts off off as playful sexual rigidity, but then as her outfits begin to come off... it gets incredibly genuine! Your brain is telling you this is not ideal, but your internal primal instincts won't cease her as she begins to check here stroke your hard cock. Before you realize it, she opens her mouth, and you're feeling her tongue around your tip... then her legs spread as she guides your throbbing meat into her swollen moist vagina. It’s all taking place so rapid; you’re pounding her as she moans!! Your balls swell up with cum, and you hear your stage-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside of her?