"Nice guess, but even a broken watch is right twice a day."
"Slow down, you're wound tighter than a two dollar watch."
"Hotter than a two dollar pistol."
If you just had a tool for that job... "Well, if a frog had wings, it wouldn't bump it's 'butt' when it hops."
"I'm so hungry, I could eat the south end of a northbound mule."
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Not sure if I made this one up or got it through osmosis:
Me: Does this look info look right the way I have written it?
Co-worker: Yes, that's exactly right.
Me: Oh good, I thought maybe my clutch was slipping.
