Would a Goody Two Shoes Suck Her Stepbrother's Cock Under the Table?

My stepsister is such a goody two shoes! I was trying to show her how fun it is to act crazy every once in a while by taking my cock out next to our stepmom when she was distracted, but I didn't think my stepsis would follow my lead and take her tits out! Man, I have imagined those nipples more times than I can count, but I never thought they would be so hard and perky. Her boobs were so perfect that I wanted more, so I challenged her to suck my dick under the table without our stepmom noticing. She gave me one of the best blowjobs of my life, and I could tell she was enjoying the taste of my cum and the possibility of getting caught, so I decided this was just getting started. If my stepmom is so easily distracted and my stepsister is horny, I'm going to take as much advantage of the situation as I can.