Dr. Wal-Mart
A doctor in a clinic, usually in a wal mart or other store like target, that has basically no medical knowledge, and only exists as a means to get perscriptions when you don't have a real doctor. You usually dont go to said doctor for a diagnosis, as they are to dumb to give one.
Mom: Jill has strep.
Dad: I'll just take her to Dr. Wal-mart.
Dad: I'll just take her to Dr. Wal-mart.