Twister!
or
When it came time to pay, the skunk didn't have a scent, the deer didn't have a buck so they put the meal on the duck's bill.
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It's not a shrub, it's a lemon tree my dear Watson.
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100: One to do it and ninety-nine to say "I could've done that."
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One's a spineless, poisonous blob. The other is a form of sea life.
or