A chain of negative events set in place by one seemingly insignificant event. Usually terminates in a completely undesirable result or outcome.
“So we’re not going to have a wide receiver this season?”
“Yeah, seems he got pulled over for speeding and had expired tags. Then the cops found a crack pipe, so they took him to jail. The league suspended him, and now we gotta explain all this to the press!”
“Wow, sounds like a Crapucopia!”