Step-mom calls you late at night before she goes to bed. She tells you she's alone and bored and wants to know how things are with you and work. As you start talking, she realizes how much your voice turns her on. She spreads her legs and starts touching her hairy pussy. As you continue telling her about your day, she fingers and rubs her cunt. Then, when things get hotter, she grabs her vibrator and cums quietly. You have no idea what's happening, but ask her about a noise you hear. Then, she turns the vibrator off and continues fingering her pussy to cum quietly a second time. Then you two say goodbye and you continue with your day without even knowing that step-mommy has masturbated hearing you, her step-son.