Would you pull out or drain your fertile nut deep

Ok...so you couldn't resist the urge to view your stage-sis naked. It commences off as playful sexual tension, but then as her outfits begin to come off... it gets quite serious! Your brain is telling you this isn't proper, but your inside primal instincts will not likely halt her as she begins to stroke your hard cock. Before you realize it, she opens her mouth, and you're feeling her tongue all-around your idea... then her legs distribute as she guides your throbbing meat into her swollen wet vagina. It’s all happening so quickly; you’re pounding her as she moans!! Your balls porn swell up with cum, so you listen to your action-sis say...cum within me! Would you pull out or drain your fertile nut deep within her?