Horny student gets a surprise from her biology tutor

A young woman struggling with her biology lessons enlists the help of a hot bodybuilder tutor to guide her through the basics. However, things take an unexpected turn when he drops the textbook and starts exploring her tight body instead. The tutor, it turns out, is a big fan of biology in a whole new way. After a steamy make-out session, the tutor's girlfriend joins in, and the three of them get down and dirty. The tutor takes the girl from behind while his girlfriend eagerly watches. The girl then hops on top, riding the tutor's big cock in a wild cowgirl ride. The tutor then gives the girl a mind-blowing blowjob before she returns the favor, sucking his cock and licking his balls. The tutor then sprays his load all over the girl's big natural tits, leaving her covered in his warm cum. This biology lesson is one the girl won't soon forget.