Have you ever been in a situation where you felt you had to resort to unusual tactics to improve a grade, and how did it turn out?

Is it common for professors to give in to pressure from students asking for grade changes, and what strategies do students use?
Can you share a time when your first aid training really impressed someone, especially in a family emergency?
Does this mean that people will not treat you good even when they say that they are a good person there just different behind closed doors?
How did you deal with the fact that your dark secret got exposed?