First, from the "Peppy shrimp, let's go" terrier, just "Peppy shrimp" replaced by "Peppy eel".

The second is from a true story: Mr. Liu unfortunately suffered from intestinal obstruction, a variety of abdominal distension and abdominal pain does not flow, however, suffering from the pain of his first thought is not to go to the hospital, but to think of an old recipe: with the help of eel viscous slippery treatment of intestinal obstruction. So the skinny eel drilled deeper inside the human body. Fortunately, Mr. Liu rescued in time to save his life.

In addition, Pipi eel in reality refers to eels represented by various types of eels.