Facebook Spoilerist
The worst kind of person who ruins your day by telling you the ending of a show or movie before you even get to watch it. They think they're helping, but they're just being a jerk.
'I just watched the final episode of the new Marvel show and I have to tell you the ending!' (said at 1 AM)
'The main character died in the second to last episode!' (posted right after the final episode)
'They never had a chance to get back together!' (said like it was the worst thing ever)