In the episode Mark Lilly continues to see Larry King multiple times throughout the day which makes him very suspicious. It is later discovered that the "Mad Larry Disease" is the reason why Mark continues seeing him.
Mad Larry DiseaseEdit
As explained by Dr. Sanjay Gupta, the combination of drugs used by Larry King, including Plavix, Adderall and Viagra, causes a widespread cloning disease. This disease is believed to be transmitted through the blood. It is eventually cured by Blake's father.
- Larry King at Wikipedia