Someone who obsesses over diesel's and diesel accessories. Diesel Burgers are usually male rednecks, and likely to be a fat chad
Common signs of diesel burgers are.
1. If you have stacks on your truck
2. If you have hunting, camouflage, or other rediculous stickers on your back window.
3. If you can be seen rolling black smoke anywhere you are driving.
4. If you never pull a trailor.
Guy1 "Man did you see that guy rollin all that black smoke?"
Guy2 "Yeah he's a Diesel Burger"