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Substitute for "mother fucker" at times when the latter may seem overused or too expected. Works best when juxtaposed with at least one word of improper English. Usually heard spoken by Burger King night porters, Borders employees and bus drivers.
I just mopped the whole dining room...I'm tireder than a "mother joner"
by Mark "Big Daddy J-Rok" March 23, 2007
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