Does one pull out or drain your fertile nut deep

Okay...so You could not resist the urge to view your phase-sis bare. It begins off as playful sexual rigidity, but then as her apparel begin to come off... it will get quite real! Your brain is telling you this isn't suitable, but your internal primal instincts will never quit her as she starts to stroke your really hard cock. Before you know it, she opens her mouth, and you're feeling her tongue all over more info your idea... then her legs distribute as she guides your throbbing meat into her swollen wet vagina. It’s all happening so rapidly; you’re pounding her as she moans!! Your balls swell up with cum, and you simply listen to your step-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside her?