That was Cartman (natch) who, when he inherited a load of money from his grandmother, buys an amusement park so he doesn’t have to wait in line ever again.
Then he has to hire a guard to keep everyone else out, which means he has to let in a few people every day to fund that paycheckan and ao on.
Pretty soon, the park is overrun with people again.
Which makes him so mad he sells the park back to the original owner, who is excited now that his park is popular, so he pays him back his million dollars.
And then Cartman loses all his money because the government steps in and collects taxes from his operation.