You walk in and startle step-mom on purpose as you know she gets naked for horny men for money on webcam in her bedroom. That turns you on so much you just had to taste step-mommy pussy in front of that horny man in the camera jerking his cock for step-mommy. Step-Mommy loves her special time with her boy and gets very wet sharing you with the horny man.

( FYI all solo roleplay! no man in webcam :)