failure story; horror story
A personal account of a mistake or embarrassing experience, often shared for humor or as a cautionary tale.
Everyone burst out laughing when they heard his failure story.
I wrote about my job-hunting horror stories on my blog.
We all laughed after hearing our senior's failure story.
He told his failure story in a funny, exaggerated way.
苦労話 centers on hardships or struggles endured, whereas 失敗談 zeroes in on a specific blunder, often told for laughs.
stories and episodes are naturally counted with 話; 失敗談 also fits as a story/episode.
Compound of 失敗 (failure) and 談 (story, account).