She secretly loves it! You ever just need an outlet to let out some sexual frustration? Well, who better to unleash those pent-up urges with than your annoying, bratty step-sis, who just happens to be hot as hell! Plus she'll never admit it publicly cause you know, you're her step-bro, but by the sound she makes and how wet her pussy gets - you know she secretly loves getting penetrated hard by you.