Season 1, Episode 6.

According to a query on Bilibili, the plot of burgers and cheeseburgers appeared in the sixth episode of the first season of the "Crayon Shin-chan" cartoon. In this episode, Mei Ya asked Xiaoxin to buy drinks, but Xiaoxin used the money to buy fried pancakes and sell burgers, including cheeseburgers, on the roadside. This humorous plot has become one of the classic clips in the series of animations.