Do you pull out or drain your fertile nut deep

Ok...so you couldn't resist the urge to view your phase-sis bare. It begins off as playful sexual rigidity, but then as her outfits begin to arrive off... it receives extremely authentic! Your Mind is telling you this isn't right, but your inner primal instincts is not going to quit her as she starts to stroke your tricky cock. Before you realize it, she opens her mouth, and you are feeling her tongue all around your tip... then her legs spread as she guides your throbbing meat into her swollen moist vagina. It’s all here occurring so speedy; you’re pounding her as she moans!! Your balls swell up with cum, and also you hear your phase-sis say...cum within me! Would you pull out or drain your fertile nut deep within her?