You wake up hard in bed next to your sister’s cute best friend Lucy, her tiny sleep shorts riding up, so you immediately start gooning, stroking slow and steady under the sheets. She stirs, blinks awake, and whispers she had to crash with you because your sister’s busy fucking someone else, she insists that it’s fine, you’ve known her forever. You don’t stop pumping; she notices, calls you a little freak with a smirk, then slides closer, eyes sparkling, and slips her hand under the blanket to wrap around your cock and stroke you faster.