Dr. Poo
"Doctor" Gillian McKeith, known for her interest in the alleged medical value of feces in particular and the excremental nature of the woman and her advice in general. Much given, under the pretext of caring for people's health, to tearing them to bits on British TV for failing to live up to the the ideals of either mainstream medicine or, when that fails, those of Prince Charles. Possibly an indirect reference to the unrelated SF drama "Doctor Who".
After an hour of listening to Dr. Poo, I was willing to forgive McDonald's for everything.