Pretty much shows there is still some issues within Luna the writers could have her resolve/face and such.

ohh… sorry miss Luna but your dentist fee just went up… by about a couple thousand bits.

And that’s why you shouldn’t look a gift horse in the mouth.
 
 
…I’ll leave now.

I haven’t had ANY kind of nightmare for a very long time. Though from my young childhood I remember a acouple scary experiences, that were nightmare-esk, but I was still awake. Anyway, I was the same both times: all of a sudden I started hearing this weird noise, kinda like shifting, like “Sh-sh-sh” like, but it was sped up, and LOUD. As you might have surmised my 6-year old self was not happy.
 
And as for Teeth. I’ve washed my hands(mouth?) of THAT painful rotting annoyance a couple years ago.

I’ve had nightmares before where my teeth suddenly start rotting or falling out. It’s quite terrifying to be honest. That’s why I felt so bad for Luna when she went through it.

“Look. The princess came without any pants on.”  
“Called it!”

@Background Pony Number 17  
Common nightmare for me along with waking up with out arms

I never had the “losing teeth while you talked” nightmare, nor even knew it was a thing before I saw this episode. It kind of freaked me out.

Well he’s not wrong about the pants