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An woman in upper age, older than a cougar, that has the potential to be dryer than the sands of the Sahara.
In planning for his upcoming adventure with an older woman, Martha, TJ purchased a vat of lube for fear that Martha may be a dusty butt.
by Cornwalis T. Breadford IV July 26, 2009
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3
A cheap prostitute or whore who is usually old and works for very little money.
The hooker down the street hasn't gotten any clients in months. She must be a real dusty butt by now.
by MadamCookie April 22, 2010
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