Do you pull out or drain your fertile nut deep

Alright...so You could not resist the urge to check out your phase-sis bare. It commences off as playful sexual rigidity, but then as her garments start to come off... it receives extremely true! Your brain is telling you this is not ideal, but your internal primal instincts is not going to stop her as she begins to stroke your hard cock. Before you realize it, she opens her mouth, and you feel her tongue close to your tip... then her legs spread 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 swell up with cum, so you hear more info your stage-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside her?