Gettin All Wet with Step-Sis

I can not believe my step-sister Lexi left me outside work waiting for her again, the only reason my Step-Dad gave her the car was for her to help pick me up when he couldn't. It started to rain, I got soaked and had to pay $20 for a ride. I wait for her in her room, once she finally walks in and let her have it. She completely forgot I am so tired of Lexi's bullshit but after telling her I was gonna tell our parents about it her attitude changed real quick. Lexi drops to her knees and pulls my cock out and just starts sucking me off. I am gonna make her remember me and make her wet by fucking my step-sister's tight pussy but as soon as I was about to cum our Step-Dad walked in, we were literally caught with our pants down, I don't know how I am gonna explain this....