So that real estate agents would have someone to look down on.
or
but I couldn't find any.
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Because she would have to move into a smaller house.
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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.
or
None, because people who glow in the dark don't need light bulbs.
Note: Topical to the Chernobyl Reactor disaster of 1984.
or