a total fucking disaster ...the kind that makes you want to shake your head.

A person or situation that can't escape an inevitable bad outcome; hence, a trainwreck.

describes something that is so bad that you don't want to keep watching or following but you just can't look away from it.

A name used to describe a clumsy, dangerous person. This person will damage things and hurt people(on accident or on purpose). They also take things too far. Rumors are also spreading about a trainwreck virus that causes these symptoms.

A sudden and disastrous halt in the music 'set' played by a DJ. Often associated with the music styles of House and Techno where a set can last for an hour or longer. This calamity results in the loss of rhythm and ‘flow’ in a club or rave, which in turn presents a certain negative attitude by the attendees toward the DJ. This is best defined as ‘boo’. This condition often throws the DJ into an extreme state of apprehension and a fevered determination to save his cred usually resulting in an increased chance of causing another train wreck. Technical problems associated with equipment do not qualify under this definition. Derived from the visual image of a train, traveling at high speed, smashing into an brick wall.

A disaster that is foreseeable but unavoidable,
disastrous yet inevitable,
distasteful, but morbidly fascinating.
You don't want to stare,
but you just can't look away.
~.Trainwreck.~

Very potent marijuana that will get you very high and fucked up. It is called trainwreck because you are so messed up.