Quite simply, when something starts off with innocent intentions or a promising outcome, but ends in disaster.
What Could Possibly Go Wrong?
can (and often does) lead into this. Related to Gone Horribly Wrong
and, by extension, Gone Horribly Right
Film - Animation
- In The Princess and the Frog, Louis tries to explain to Naveen and Tiana why he can't play jazz with humans, since his only attempt ended with him getting shot off the boat. In the end, he delivers a flat "It didn't end well."