Peanuts (TV series)
Peanuts is an animated adaptation of the comic strip of the same name. It first aired in 2014 in France. Each episode is a segment of shorts that share a theme.
Back to School (S01E24b)
This is based on a story arc from the comic. Sally goes to Beanbag Camp, where all they do is sit around, watch TV, and eat junk food. She comes back having gained weight.