Honourable mentions:
kaufman - Self-fulfilling Prophecy
TheElPaso - Bongo Finds Out That He's Going To Die
ObiJo - Bongo Finds Out That He's Going To Die
kaufman (with special thanks to wirthling) - Cogito Ergo Pun
israphael - The Eternal Question
And the winner...
lara7 - Occam's razor
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"Oh, look, a joke! How original! Thank you, but if I wanted my emotions stimulated pleasurably, I'd get a whore." - Donald B. Jones III