Definition & Meaning of "jelly belly"in English

What is the origin of the term "jelly belly" and how is it used?

"jelly belly" is an English slang term that emerged in the 19th–early 20th century, using "jelly" as a metaphor for softness and wobbliness to describe excess body fat around the stomach. The imagery compares a protruding belly to gelatin, emphasizing softness rather than strength. It has been used in informal speech, cartoons, and teasing commentary to mock someone's physical appearance. The term is derogatory and body-focused, often used jokingly but still insulting; it is not neutral and can be offensive depending on context.