Does one pull out or drain your fertile nut deep

Okay...so you couldn't resist the urge to view your stage-sis bare. It starts off off as playful sexual tension, but then as her apparel start to arrive off... it will get pretty actual! Your Mind 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 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 swell up with cum, and you simply listen to your move-sis say...cum inside of me! Does here one pull out or drain your fertile nut deep inside her?