Dean Winchester: You come back.

Sam Winchester: Promise.

Dean Winchester: B*tch.

Sam Winchester: Jerk.

From Supernatural – Season 12 Episode 22: ‘Who We Are’ (12×22) | TV series produced by The CW

Quote References & Callbacks

This quote dates back to the beginning of the series. It is their expression of fondness, hidden behind insults. Could be perceived as their version of “I love you. – I love you too.”