[Pearls Before Swine]

Jill isn’t that kind of a doctor.

She’s a “Doctor” of Education.

[KevinB]

Jill isn’t that kind of a doctor. She’s a “Doctor” of Education.

Yes, that's the joke. A couple of weeks ago Whoopi said on the View that Jill is an excellent doctor and Joe should make her Surgeon General. Apparently, you missed it.