Does one pull out or drain your fertile nut deep

Ok...so you couldn't resist the urge to see your stage-sis naked. It starts off off as playful sexual tension, but then as her outfits begin to occur off... it gets really serious! Your Mind is telling you this isn't proper, but your inside primal instincts will not cease her as she begins read more to stroke your tricky cock. Prior to deciding to know it, she opens her mouth, and you feel her tongue all around your suggestion... then her legs unfold as she guides your throbbing meat into her swollen damp vagina. It’s all occurring so speedy; you’re pounding her as she moans!! Your balls swell up with cum, and you hear your step-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside her?