Real Doctor

LECTURER: Ah! Joba long time! Howre you doing?
JOBA: I'm good sir. I came to find out if I could gain admission into the Medical Department to fulfill my dream of becoming a doctor.
LECTURER: Oh I see! How was your O' level result?
JOBA: Very good sir! I got two credits in Yoruba and Agricultural science sir.
LECTURER: (Laughing) and you call that a good result? Well, you can still fulfill your dream of becoming a doctor.
JOBA: Thank you sir!
LECTURER: As a Native Doctor. Your credit in Agricultural science will be good for herbs and your credit in Yoruba will be good for incantation.