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1.
an expression used when one is in an uncomfortable setting and wishes to depart with little talk.
"I think it's about time I be hitting the ol' dusty trail" said Mr. Puterschmidt after Peter finds out that his ancestors were owned by his.
by DaPimpX September 22, 2004
 
2.
When one has diarhea on another companion's chest with a spraying effect
I could give an awesome dusty trail right about now after eating that mexican food.
by Rich C. May 24, 2006