A proftitute is a person who is ready to trade his self-respect for mere pass grades. Usually these unfortunate illicit relationships spike up towards the end of semester.
one out of three university students is a proftitute
Whoring yourself out to your professors for better grades.
ie: Student one: "hey, you look kinda tired, are you okay?"
Student two: "yeah, I'm just tired. My Calculus grade was kinda low so I spent the whole night engaging in proftitution with Dr. DingleMcBiscuitBerry. I have a D now."
Student one: "You mean the D."