Does one pull out or drain your fertile nut deep

Ok...so you couldn't resist the urge to view your stage-sis bare. It begins off as playful sexual pressure, but then as her clothing begin to come 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 starts to stroke your tricky cock. Before you realize it, she opens her mouth, and you're 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 taking place so quickly; you’re pounding her as she moans!! Your balls swell up with cum, therefore you website hear your stage-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside of her?