Meh, I forgot to check this source yesterday because I was busy getting pwned by a mathematician. Anyway, thanks to Whatshisgame via Equestria Daily for the reminder. The U-verse synopsis (from FYI Television) can be found behind the break as per usual.
Air date: December 8, 2012
Over a campfire, Rainbow Dash decides to share some imaginative and spooky tales, causing Scootaloo to have frightening, vivid nightmares; Scootaloo wants to get rid of her nightmares but doesn’t want the others to think she is spineless.