The ruining of a surprise in a book, movie, tv program, etc.
So, Sasuke pwns Itachi
only to discover that Itachi
was a good guy and that he massacred his clan on orders from the higher ups
. Turns out the entire Uchiha Clan
was planning to take over the village. Ironic isn't it? Now Sasuke
wants to crush the village.
Oh, and Snape
is going to kill Dumbledore
But he actually is good. And Harry
Oops, I forgot to put a Spoiler Warning didn't I? Well, hope the Spoilers didn't ruin your day.