Yes, she might have more questions

After what seems like only seconds she pulls her shorts down (she's not wearing panties) and is frigging her clam and soon lets out a loud moan. This startles her back to reality and she looks at you and notices that you're excited too. "Do... do you like what you see?" she asks while pulling her shorts down and off. You nod and she responds by removing her top. Instinctively, you both embrace and she works your cock free. She is good at giving you a hand job considering she is a high school senior who hasn't done more than kiss a date to your knowledge. You have fucked a few girls and have three fingers worked into her snatch. Your other hand is working on her nipples making them hard as diamonds and she is kissing you back with an expertise you didn't think she could have. She has gotten you naked and is grinding on you and is about to impale herself on your dick. Suddenly, on the screen the porn actress screams "Fill my cunt with your load!". Your sister pulls away from you. "Can't she get pregnant from that unless its her first time? My girlfriends all say you won't get pregnant your first time." (Your mom apparently didn't cover this stuff and the school is afraid to teach sex ed.) You are out of condoms and your lower head is thinking about only one thing and has no conscious.