Coal roller 

A truck driver that usually drives a dodge, and sometimes a Chevy who has nothing better to do with his life the shoot black smoke out of his exhaust and hurt the air. U can tell a coal roller because they usually have their hat on backwards and a stick up their ass.

Look at Greg he just rolled coal in that old ladies window, one day I will be a coal roller.

Coal roller by Tenderjunk22 June 20, 2022

Coalroller 

A coalroller is typically a truck that spews black smoke out of (usually a smokestack like on semis) it's exhaust under the guise of a backwater hick saying, " it's the diesel that does it!" Like the word suggests, it's not actually diesel that causes this black death cloud; it is, in fact, coal dust.

"Yo Jack, is there a house on fire here?"
"No, Jim. It's some asshole driving his coalroller down the road."

Coalroller by Christian98 April 22, 2015