Does one pull out or drain your fertile nut deep

Alright...so You could not resist the urge to discover your move-sis bare. It begins off as playful sexual rigidity, but then as her clothing begin to occur off... it gets quite real! Your brain is telling you this isn't suitable, but your interior primal instincts would not stop her as she starts to stroke your tough cock. Prior to deciding to comprehend it, she opens her mouth, and you feel her tongue close to your suggestion... here then her legs distribute as she guides your throbbing meat into her swollen soaked vagina. It’s all going on so quick; you’re pounding her as she moans!! Your balls swell up with cum, and you also hear your action-sis say...cum inside of me! Would you pull out or drain your fertile nut deep inside of her?