One Got Fat is a unique and darkly whimsical educational film from 1963 that has attained a certain level of notoriety due to its unusual approach to teaching bicycle safety. Directed by Dale Jennings, the film stars Ralph Hulett Jr., Charles Hagens, and Dick Hutto, who collaborate to bring to life an unconventional narrative that combines elements of cautionary tales with surreal and morbid humor.

The film takes place in a nondescript suburban neighborhood and follows a group of ten friends, all children who don anthropomorphic monkey masks in a surreal twist, and who are known to the viewers by their first names and nicknames. The children are excited about a picnic they plan to attend, and each of them rides a bicycle to the park where the event is taking place.

As a distinctive character, Ralph, serves as a narrator, and as a sort of indirect participant, he guides the audience through the events that unfold. He provides insightful commentary throughout, often serving as the voice of reason and the source of safety tips and cautionary advice concerning proper biking etiquette and rules.

The movie's title, One Got Fat, refers to a grim fable threaded throughout the film, using an allegorical structure to convey its safety messages. As the children set off on their journey, a series of scenarios present themselves, each one offering a different lesson in what not to do when riding a bicycle in public spaces. The film’s approach to these scenes mixes a peculiar and surreal tone with an underlying seriousness about the potential consequences of disregarding bike safety.

One by one, the children encounter a variety of dangerous situations due to their complacency or failure to adhere to safety rules. These scenarios range from ignoring traffic signs to riding double on a bike meant for one. The consequences of these actions are presented in an exaggerated, allegorical format, with each mishap leading to a child being removed from the group in a strange and ominous fashion.

The film utilizes a technique called “disappearance storytelling,” where the characters face the repercussions of their carelessness in an exaggerated form, thus highlighting the importance of bike safety in a manner that aims to be memorable and impactful for its young audience. As each situation unfolds, Ralph provides a summary of what went wrong and how it could have been avoided, reinforcing the message that following proper rules is crucial for safety.

The mask motif in the film, with the children wearing oversized monkey masks, appears to be a consciously chosen symbol to emphasize the depersonalized, universal nature of the lessons being shared. It serves as an abstract and eerie representation of innocence and the potential loss thereof through careless behavior, as well as offering an oddly humorous undertone to the proceedings.

The title, One Got Fat, also carries an ironic undertone, referring to a character who, unlike the others, rides safely and arrives unscathed at the final destination, ready to enjoy the bounty of the picnic alone. This twist in the narrative highlights the film's ultimate message—safety ensures not only well-being but also the rewards that come with being conscientious and responsible.

Despite its educational intent and simplistic plot, One Got Fat holds a distinctive place in the history of public safety films. Its use of bizarre imagery, including the unsettling monkey masks, and its somewhat macabre tone mark it as one of the more oddly memorable and discussable pieces of mid-20th-century educational cinema, often analyzed for its unique take on influencing behavior through shock and absurdity.

The film, running at roughly 15 minutes, encompasses many practical traffic safety lessons, such as respecting signals and signs, understanding right of way, maintaining bicycles in good working order, and the importance of visibility for preventing accidents. While aimed at children, the messages are universal and apply to cyclists of all ages.

One Got Fat extends beyond a simple instructional piece; it embodies a curious cultural artifact that showcases how mid-century America sought to instill civic responsibility into its citizens from an early age. As an educational short, it remains an enduring reference in discussions of novel techniques in public safety messaging, an exceptional example of how fear, coupled with dark amusement, can be utilized in an attempt to influence social behavior.