Continuity mistake: Butters' dad's first name changes from Chris to Steve as the series progresses.
Continuity mistake: Whenever you see Mr. Mackey, he has nothing connecting his glasses in the shots showing the front of his face. But in the side of his face shots, you can see he does have a connector.
Continuity mistake: In many episodes, the word "chef" on Chef's apron goes from lower case to upper case, within the same episode and usually happens instantly between shots with no time for him to change the apron. (00:11:10)
Answer: Essentially Stan was trying to return the blender that his dad, Randy, had bought because he knew his parents couldn't afford the extra debt. The blender, which represented mortgage-backed securities, had been bought on payment plan, meaning Randy had to make monthly payments, with interest, on something that wasn't essential. The episode represented the recession that was occurring at the time, including the housing bubble and mortgage crisis going on, so there's a lot going on. However, the payment plan (which is to say the debt) had been sold to another company by the store that sold Randy the blender. (To explain why, because of the recession, the store needed cash on hand, and they would only be getting a little money each month, if Randy paid his bill. So the store sells the debt to a company who gives the store the money upfront. Think of the J.G. Wentworth commercials, "I have a structured settlement, but I need cash now".) Because the store sold the debt, in ridiculous fashion, Stan had to return the blender to the company that bought the debt, although they too sold the debt to another company. Finally he gets to the U.S. treasury who tells him his blender is worth $90 trillion (again a ridiculous exaggeration) meaning that the debt owed is greater than the product is worth and to deride the way government agencies set up their budgets (which requires much more complex economic lessons). Kyle's whole point was people shouldn't fear the economy or see it as a vengeful being, but continue to spend and live as they normally do. Economically speaking, not spending money during a recession creates a longer lasting recession, and to solve a recession, people should spend money, although people and businesses shouldn't acquire debt during a recession because interest rates are higher. But on a personal level, individuals are fearful of losing their jobs during a recession, so they save money in case that should happen. But again, this is complex economics lesson.
Bishop73