Definition & Meaning of "shit the bed"in English

What is the origin of the term "shit the bed" and how is it used?

"shit the bed" is a vulgar English idiom that appeared in the mid-20th century, using literal fecal imagery to convey total failure or catastrophe. The phrase emphasizes a spectacular or complete collapse, often implying that the failure has ruined a situation beyond repair. It is commonly used in informal speech, sports commentary, media, and online discussions to describe blunders or disasters. The expression is coarse and derogatory, context-dependent—it is acceptable in casual or humorous settings but offensive and inappropriate in formal or polite contexts.