They charged one - and let the other one off.
or
[A Condesending con descending]
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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.
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Five. One to screw it in and four to tell him how bitchin' he looked doing it.
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Drinking, bathing, washing, swimming, etc.
or