Podunk
A piece of shit, cheap or decrepit tool, car, or house. Anything not up to a higher standard. Could be a person who performs a terrible job/service. Anything of low class standards can be referred to as podunk rather a person or a thing.
This podunk lawn mower uses a screw driver in place of a key.

These podunk workers should be building a barn instead of a house.

Your podunk car doesn't ever start, stalls at traffic lights, and has no air conditioning.