An episode of a TV series in which the plot revolves around a boring or unloved side character. This term comes from a Family Guy episode in which the main character, Peter Griffin breaks the fourth wall and makes a reference to the phenomena by apologetically informing the audience that this was to be another "Meg episode".
Friend 1: Oh great! A new episode of Widgets!
Friend 2: Sorry man, I already downloaded it. It's a another Meg Episode, all about John Doe. Boring.
A standard filler episode in many Animes. A beach episode features characters on a spontaneous trip to a beach or pool with little plot progression.
Two characters just died last episode, the main characters were deeply saddened. The next episode features a completely spontaneous trip to a beach or pool; beach episode!