(I actually had a young lady in one of my classes come to me in hopes of getting a 'better' grade than C- on a paper she had written.)

"Oh", she said, "I'd do ANYTHING to improve this grade!"

"Does that mean you'd be willing to.....re-write the paper?", I asked.

She hemmed and hawed and indicated she "didn't really have time".

I suppose I know what she did have time for....guess I missed my chance.

(Oh...the prof graded on a modified curve. She got an 'A' in the class by one point! Boy, I'll bet she was glad she wasn't more insistent.)