Verb: To "do goodfood" is to take part in the event of enjoying a delicious meal either from somewhere or home made.
Noun: A meal meeting the requirements to be called "goodfood".
As a verb:
"Dude where are you going?"
-"To sheetz so I can do some goodfood"
"Man I'm trying to do some goodfood here soon"
As a Noun:
"I'm going to sheetz to get some goodfood"
For example: a subway sub is just regular food. But if one were to get a sub, a subway pizza, heat up some nacho cheese with some chips and combine all three, then you are doing goodfood.