What is the episode of family guy that Brian calms stewie down?

There isn't one specific episode where Brian calms Stewie down that stands out as a defining moment. Brian and Stewie's relationship is complex and often involves them supporting and frustrating each other in equal measure.

However, there are a few episodes where Brian helps Stewie in moments of distress:

* "The Thin White Line" (Season 3, Episode 19): Brian tries to comfort Stewie after his "imaginary friend" Rupert is lost.

* "Road to Europe" (Season 11, Episode 13): Brian encourages Stewie to be more open and vulnerable with his feelings.

* "The Giggity Wife" (Season 14, Episode 15): Brian supports Stewie when he is struggling with his identity.

Ultimately, Brian's role in calming Stewie down is often subtle and nuanced, reflecting the dynamic of their unusual friendship.

If you are looking for a specific scene where Brian helps Stewie, it would be helpful to provide more context, such as what kind of situation Stewie is in, or what kind of emotions you are looking for.