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A cocksuckers remedy used to get rid of a bad taste in their mouth. Usually needed by men or women who constantly suck up to their boss to get ahead or feel important.
"He has been sucking up to his boss so much, he'll need some decockgestant to get the taste of his boss's cock out of his mouth."

"When she comes out from under her boss's desk, she'll need some decockgestant and some floss.
by johnjamescecilalawishusIII September 11, 2011