Taking down Dr. Pompous

Dr. Pompous, MD: Do you know what the initials MD behind my name means?

Squeakykitty: I'm thinking that it could stand for---

1. Mega Doofus
2. Maggot Droppings
3. Mentally Deficient
4. Morally Defective
5. Major Disaster
6. Mean Doctor
7. Mentally Disturbed
8. Mastodon Dung
9. Mouse Droppings
10. Major Drama-queen

None of these sound familiar??
Well-----
Judging by your attitude, it just might mean Major D-head, but I'm reasonably sure it doesn't mean Medical Diety!!