A redneck woman had been feeling poorly for some time and finally decides to go in to the doctor to get checked out. Following her appointment, she comes home and proceeds to drink all of the beer in the refrigerator citing "doctor's orders", much to her husband's chagrin.
The next day, she was not feeling any better and went back to the doctor for a follow up. Upon relating how she had followed his instructions and was still feeling lousy, the doctor responded "I didn't tell you that you needed a Pabst Beer ...!"