Hello big step-brother... I need your help with something. I'll tell you a secret: my boyfriend and I we started doing naughty stuff... things boys and girls do you know... And i wanted to wear sexy panties for him but I need your man's opinion to choose the sexiest ones. Do you ever think about my ass? Or look at it? I model you my first red thong and I quickly see your boner. It's ok, my boyfriend gets boners too but he's not as big as you big step-brother. I can totally show you the rest of the panties ( a white thong and blue cheeky panties)... but you'll have to let me help you jerk off by following my instructions. I model you my panties, give you a nice panty show, get you hard, taste you precum, show you my ass, sniff my panties and smell my pussy and ass. I show you my holes so you can get more turned on. I tell you to jerk off for your little step-sister's pussy and panties, tell you to even smell them and give them to you so you can stroke your cock with them too. They smell so sweet. I love how my pussy and ass smell, your step-sister scent turns you on. I know our step-parents are in the living room, dont worry we are just having fun! I finally ask you to cum for me by giving you a countdown from 10. I also taste your cum. You're so much better than my boyfriend. I think I wanna breakup with him and be yours, big step-brother