Lara Brookes needs cock to get motivated in class

Mr. Corvus is the subsitute for Professor Johnson who's out sick. He calls in Lara Brookes because she was the top student before he took over but now she's failing miserably. Apparantly she isn't motivated enough and what motivates her is getting her pussy fucked. Could also be that fucking a student was why Professor Johnson gave her high grades but that's only fair right?