When you combine the two most devious, sneaky, manipulative, underhanded, cunning, and diabolical forces in the known universe, the consequences can be world-shattering. Those forces are, of course, players and GMs.
Shmi: Anakin, I know what you did. <cough>
Shmi: Cliegg never told me, but I worked it out. You blackmailed him into buying me off Watto, didn't you?
Anakin: I had to. There was no other way.
Shmi: And when he refused, you ordered his leg cut off.
Padmé: Now hang on just a minute!
Padmé: Why are you always picking on Annie? Telling her stuff she's done had bad consequences?
Padmé: You let the rest of us get away with murder.
R2-D2: Are you serious?
GM: I... er...
Anakin: It's okay, Jim.
Anakin: This is part of Anakin's character development. We worked it out together ahead of time.
Padmé: You did?
Padmé: Holy cow.
R2-D2: See, this is what happens when players cooperate with the GM. It's unhealthy, I tell you.