Top Definition
A nasty, greasy skid mark or shit stain created from excessive and repeated release of wet farts and flatulence and Moose Jelly while in a seated position for an extended period of time. Trucker's Grease may also be created from or enhanced by poor wiping of the anus and occurs when the underwear ride up deeper and deeper into the ass crack from squirming and moving about in the seated position.
Jerry packed his bag for the long drive to California. He threw in extra underwear as he anticipated the long dive and hours in the seated position would combine with a nasty road diet of fast food resulting in a lot of Trucker's Grease.
by Enya Goode April 15, 2014

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