@Poptard  
I understood that reference.

“You want to know why my eyes went all (bells jangling)? Nuh! Because ever since I started having to perform my protection spell, I’ve been getting terrible migraines. Cadance hasn’t been casting spells on me. She’s been using her magic to heal me! And she decided to replace her bridesmaids because she found out the only reason they wanted to be in the wedding was so that they could meet Canterlot royalty! And if she hasn’t been on her best behavior with your friends, it’s because with me being so busy, she’s had to make all the decisions about the wedding! She’s been completely stressed out because it’s really important to her that our big day be perfect! Something that obviously wasn’t important to you! (gasps) Now if you’ll excuse me, I have to go and comfort my bride. And you can forget about being my best mare. In fact, if I were you, I wouldn’t show up to the wedding at all.”
 
Damn, he really chewed her out there!

Shining: “Twily, I am disappoint.”

“Now you fucked up.”

Murder

Did you go in my room?!?!

“I know you took the last yogurt….”

Shining: “I found the photos, Twilight.”

So many possibilities for what’s going on here…SA as the loving but disapproving big brother.
 
Shining Armor: I’ve got a good mind to tell Mom & Dad about insert whatever bad behavior Twilight has been up to!
 
Twilight: You wouldn’t! Come on…please?

There’s a Spy creeping around here.