EEnE fan-theory/headcanon:
The Ed, Edd n' Eddy Bible has this to say about Ed's parents;
"His mom Xerox’s his sketches for her analyst to check out while his dad hopes he will inherit his vast knowledge of the second hand auto trade."
In the episode Ed, Ed & Away Eddy tells us that his father is a used-car salesman, and in Every Which Way But Ed we see that Ed & Eddy has known each other longer than they've known Double D.
This leads me to believe that Ed & Eddy's fathers are business partners operating a car shop together.





