Always loved saying this to people who want me to do what they wish in order, obediently, no exceptions.
"If I was meant to stay upon the tracks you have laid out for me, I would be a train, And seeing as I have crashed over twenty-two trains, you must be accusing me of murder." - Myself
Good times.
EDIT: Actually, just thought of something more fun to say when context allows.
TRI-QUOTATION IS A-GO!
"Obviously it was John" -myself
"Who's John?" -anyone involved
"Who isn't John?" -myself
Also, this was said by me once upon an event, and I think it's been said before, but I don't care: "The game is a metaphor for life. You can never win, and if you think about life, you're a philosopher and therefore fail at life." -Myself
EDITAGAIN: *sigh* because I was reminded: "There are 5 types of people in this world: Those who can count, those who can't, those who make fun of the latter, and hypocrites."
(becomes twice as funny when the person you're talking to responds with "you forgot two" and you taunt him on that)