Working definition of amateur porn will work well for the porn-minimalists.
"Professor" Joe Elliot is probably the oldest living grad student on whichever campus he's hailing from. Perhaps he works in a dining hall. Surely, if he were, indeed, a professor, his tenure would have been revoked by now. Regardless, these girls are very much the type of beer-swilling, promiscuous coeds one would find upon venturing into the party scene of higher education.
Joe's first student, Amy, is a 19-year-old English major who pretty much doesn't know if she's in the right major, but she seems to know how to pull off some enticing solo-masturbation and give head. Joe is a performer and camera operator at times. The banter is pleasant bullshit of the casual sex kind.
Just a reminder, these girls are not professionals. Thusly, they probably spend most of their time guzzling beer and doing the walk of shame, which is likely the most exercise they get. Still, this "realism" of attractive girls with rough edges is the appeal. Joe graduates cum laude on this outing. Pre-nom Joe for a Best Amateur Series contender.