Definition & Meaning of "all fart and no shit"in English

What is the origin of the term "all fart and no shit" and how is it used?

"All fart and no shit" is an English slang phrase that emerged in the late 20th century, using crude bodily imagery to convey a metaphor: someone produces noise or show ("fart") but no meaningful outcome ("shit"). The phrase emphasizes empty talk, superficiality, or ineffectiveness. It is used in informal speech, workplace or social criticism, and humorous commentary to mock people who promise much but deliver little. The term is vulgar and clearly derogatory, though often playful, and conveys disapproval rather than serious moral condemnation.