Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
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
Text fits
Save
Cancel