Rolling coal is the act of modifying a diesel engine to supply a rich fuel mixture. This produces large black plumes of smoke. Sociologists have studied the connection between inbreeding and the modified diesel engines for many years.
The act of rolling coal has come to be known as a celebration in the United States as the love and commitment you share with your family.
Jimmy was proudly rolling coal while leaving the outskirts of the trailer park with his sister on his lap.
by Sethxy July 24, 2017
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Term used to describe when a diesel engine is blowing a thick cloud of black smoke. Also common with yuppie teenager's who have there parents pay for a nice diesel truck and then put a chip in it to blow smoke.
"You should have seen that truck it was rolling coal like crazy."
by popsicleishous February 19, 2009
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the act of rollin' coal. When you have a tune on your diesel truck or have turned up the injection pump and you mash the throttle overfueling the engine until the turbo spools up, producing a large cloud of thick black smoke. Its fun to do, but you can't go around doin it all the time as enviromentaists hate us enough already
Did you see me roll coal all over that group of enviromentalist protesting the diesel truck lot?
by 05_PSD July 30, 2009
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Originally a term used to describe the act of blowing thick clouds of smoke from a specially tuned diesel pickup truck, but has recently been reappropriated to mean taking a big ol' dookie.
I'm sorry, but I'm going to be late to the 11 o'clock. I had a beefy burrito breakfast and have to roll coal.
by internetboy December 22, 2021
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A large diesel truck equipped to blow large clouds of black smoke to signal a desire for deep anal fisting
I had no idea tom was into fisting until I saw him rolling coal
by Datsu smallcoch June 29, 2015
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Laying down a long fart while ascending an escalator. Preferably done after saving your farts for as long as possible to maximize emissions of fecal particles.
Damn dude, I'm taking the stairs. That guy on the escalator was rolling coal.
by Bonne Mamman's Bench October 21, 2015
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Turnning up the injection Pump on a Diesel engine making it Smoke alot.
"roll the coal" or "rolling the coal" is hitting the gas to smoke someone out behind you, or to just make alot of smoke. smoke=horsepowe in Diesels
by Rudolf Diesel December 12, 2006
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