To quote Wacarb
 
“Thats a lot of leather”

“Uh…you’ll have to come back later, darlings. Spike and I have some ‘issues’ to work on.”  
“…can I get up now…?”  
“Shut up, Spikey.”

@Yoga is boring  
Fluttershy is just out of shot, trying desparately and panicedly to climb out a window, her dominatrix gear hampering her escape. Possible line just before the door opened could be something like  
“Oh no, I am generically scared of this individual finding out this thing about me, you go and open the door and entertain them while I try to squeeze myself through your window…”  
But you know, in a Fluttershy line sentence structure kinda deal.

@Background Pony #EF9E  

@And Brother I Hurt People  
Either that or Rarity wore him out.

@Background Pony #AB16
 
He appears to be drugged.

No way. Spike would have a huge grin on his face.

@FloydPinkerton  
You son when two people love each other very much and one of said people also love to partake in BDSM they may wear a leather suit appropriate for such a kink known as a “gimp suit”  

Is this a reference to something? What is that costume?

… she got an order to design a gimp outfit and spike accidentally got tied up.  
They were gonna f**k at night.

@lainofthewired  
Cause it’s hot.

Hmm, nothing out of the ordinary here.

OVER-ANALYSIS GO
 
Why is she wearing the gimp suit if Spike is the one tied up?
 
THUS IT ENDETH.

Baby Cakes: Unrated Edition

“I can explain this. It’s gonna be a very nasty explanation, but I can.”

“Mmmphhh phhph phhmph?”

Oh my fuck, I wish I was Spike so much!!!

Don’t look so discouraged, this means she has extensive training in proper discipline.

Awkward~

“This a bad time?”