Would you pull out or drain your fertile nut deep

Alright...so You could not resist the urge to find out your stage-sis bare. It starts off as playful sexual stress, but then as her clothing begin to occur off... it gets incredibly genuine! Your brain is telling you this is not right, but your inner primal instincts won't cease her as she begins to 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 check here 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?