I've witnessed it on many occasions. Saw the ******ed hot chicks in some of my classes get a full letter grade bump at the end of the semester just by asking for it...answers to the majority of exam questions in office hours...etc. Needless to say I became friends with these broads.
One professor (psych) was especially known for this. His class was notoriously difficult, unless you were a smokin babe. Dude tried to give me an A- in his class, I wrote him an email along these lines:
Dr. PervsAlot (name changed),
It has come to my attention that you have ruined the "curve" in your class by providing exam answers to certain curvaceous individuals. As I am sure that you would not like this information to reach the university administration, I am sure I would appreciate the removal of the bogus minus from my letter grade so that my actual effort in your class is rightfully represented..
You mad bro,
Mr. Kenobi
**It worked...So I say forget begging lazymd and try to find a way to blackmail. Much more effective.
ACOM Disclaimer: I do not actually condone blackmail as a method of achieving academic gain...this message was intended for the purpose of humor and humor alone.