Where to start? Well, Tuesday night isn't a bad frame of reference as Newcastle United inflicted a moment of sheer ignominy on supporters that is in danger of defining a rapidly unravelling season.
The Toon Army have become accustomed to cup humiliation at the hands of lower tier opposition during the Mike Ashley era, and Brentford added their name to an ever growing list, joining the likes of Oxford United, Stevenage and Sheffield Wednesday in producing a giant-killing in only the most modest sense of the phrase.
The stage at which United tripped over their own laces this time makes it hurt all the more, yes - a semi-final in any major competition is something never achieved during Ashley's toxic reign, and not seen since Graeme Souness took his side to the Millennium Stadium in 2004.