Does one pull out or drain your fertile nut deep

Alright...so you couldn't resist the urge to find out your move-sis bare. It begins off as playful sexual tension, but then as her clothing start to occur off... it will get really real! Your brain is telling you this is not ideal, but your inner primal instincts won't cease her as she begins to stroke your tricky cock. Before you realize it, she opens her mouth, and you're feeling her more info 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 rapidly; you’re pounding her as she moans!! Your balls swell up with cum, and you simply listen to your step-sis say...cum inside me! Do you pull out or drain your fertile nut deep inside her?