Comedian Steven Wright has a whole whack of sayings:
"Why are they called apartments when they're all stuck together?"
"I used to work in a fire hydrant factory - but you couldn't park anywhere near the place."
PM me if you want a whole list....sorry I have no creative ones myself.
OH - was doing a transcription my boss left on a tape - he was in a hurry, and out came this gem: "I hope you understand that my professional reputation and my heart are in this thing with both feet."
I didn't edit it - I printed it out and HIGHLIGHTED it! :D