Fuckin' stepsis before a rave

I caught my stepsis planning to sneak out of the building to a rave in the skimpiest garment ever. Now this bony tart owes me a meaty-time favor and I want her to take care of my schlong with her lips and cooch. She will do anything to have me let her go out tonight, even let me bang her and jizz in her throat. Damn, if I knew my stepsister had such a cock-squeezing flawlessly doable slit and luved to smash from behind, we'd be doing it lengthy time ago.