Do you pull out or drain your fertile nut deep

Alright...so you couldn't resist the urge to discover your phase-sis bare. It starts off as playful sexual stress, but then as her clothes start to appear off... it receives extremely true! Your Mind is telling you this is not correct, but your inner primal instincts would not quit her as she starts to stroke your really hard cock. Before you know it, she opens her mouth, and you're here feeling her tongue all around your idea... then her legs distribute as she guides your throbbing meat into her swollen soaked vagina. It’s all happening so quickly; you’re pounding her as she moans!! Your balls swell up with cum, therefore you listen to your action-sis say...cum inside of me! Does one pull out or drain your fertile nut deep inside her?