An event involving copious amounts of fail. Everything goes completely wrong and any attempts to fix it only result in making it worse thus leading to a cataclysmic disaster. Almost always caused by gross incompetence and/or a person with "mentally retarded" IQ classification as defined by the Wechsler Adult Intelligence Scales 1981 Classification.
A display of ridiculousness. This ridiculousness could be measured in alcohol consumption, or by other controlled substances that is causing a group of people to look like idiots. It is not a "show," yet a display of behavior that is unappealing to the innocent bystander who wishes to not take part in such ridiculousness.
Everyone in that bar is drunk and acting like idiots, it looks like a total shit show in there-let's bounce.