At a family gathering, your sister notices you keep staring at her armpits while she’s wearing a tank top. She pulls you into a room and tells you to jerk off to get it out of your system while teasing you with her smooth pits. Although this one has to be a quickie, she promises that later that night, it’ll last longer. You cum for her and go back to the party with the rest of your family. Later that night, she follows through, stripping off her tank top and giving it to you to smell while she tells you to jerk off for her, gives you a handjob and teases your dick with her underarms.