episode oned

When a movie seems really good in the previews but is actually terrible when seen

The first episodic sequel of Half-Life 2. It was released by Valve Corporation on June 1, 2006.

A twisted cousin of foreshadowing and preshadowing but closer to foreshadowing

Foreshadowing episode one occurs specifically with a flashback of events before a story set by a character later in the story, more so in a TV show or a movie, that contains subtle hints to events already shown at an early point of the story, set later than the events of the flashback.

As the flashback is set further in the past, the subtle hints count as a foreshadowing

This mainly applies to television series that have ran for over a year. One episode number one fans are people who see one episode of a popular television show and try to integrate themselves into the fandoms of said show much to the annoyance of actual fans of the show who have been there since day one. They will usually try and strike up a conversation with an actual fan but most fans are not interested in somebody who knows barely anything about the series and will ignore them. This usually leads to them becoming aggressive over not being included in a fandom they know nothing about and will often accuse the fans of gatekeeping.