Julie Plec mentioned that the episode is an homage to "The Body" episode of Buffy the Vampire Slayer and is named Stand By Me because a novella on which it is based on is called "The Body".
Hashtag during the airing was #TeamGilbert
This episode has the same title as the 1986 movie starring Wil Wheaton, River Phoenix, Corey Feldman, and Jerry O'Connell about a group of boys' journey to find a dead body after the passing of a close friend.