And why does it have creamy frosting all over?!

@PerryPony  
Stealing HIS panti- err, underwear of course!

Can you explain what you were doing rummaging through my bed?

@Background Pony #C3DC  
_{I love seeing mind games get turned right back on the person who started it}

“What about the pair of Flash’s boxers you kept under your mattress?”  
“I… How do you…”  
“I do both our laundries. Why were you in my room?”  
“I… um… b-but why MY panties? They’re my best ones, too!”  
“It’s not like we’re related or anything…”  
“It’s still weird and gross…”  
“It’s gross to think you’re beautiful?”  
“W-Wha…”  
“Yeah, I’m the gross, weird freak that nobody’d ever love! So yeah, sorry I wanted to feel closer to you! I guess I’ll just leave now! Clearly I’m not wanted here!”  
“N-No… I didn’t mean that…”  
“Then what DID you mean?”  
“It’s just… it’s so unsanitary… and I’ve known you for so long…”  
“You think I haven’t washed them? What did you do to the real Twilight?”  
“Hm… fine. You can keep them, just don’t go stealing any more of my panties.”  
“Thank you! And I’m gonna make your favorite tonight as an apology.”  
“You better.”

Spike sweated nervously “Well uhh funny story really. You know how you have more then a few fans in Equestria? Well you see a few of em approached me asking to buy some of your underwear, offered me quite a lot too.” He paused and gave a nervous chuckle. “I was hiding it under my pillow hoping they would not be found while I was looking for a shipping box” He paused again before facepalming “I am SO grounded aren’t I?”

Twilight: As I am a fair and just ruler, I shall allow you to choose your method of execution.

Spike: “Do you really want them back?”
 
Twilight: “…No.”

@CaptainGrumpy  
But then he’ll miss out on the book butt!

just say they make you feel confident

He just loves purple, that’s it

“oh damn I didn’t even know that was there, must’ve gotten mixed up in the wash”
 
problem solved, no one has to die

Just say it’s yours Spike. It just happend to look like one of Twilights.

Oh I think we both know, princess.

But there so comfy. Spike’s wearing a pair right now.

Twilight: Spike, do we need to have another “talk”?
 
Spike: NO, PLEASE! YOU TOLD ME MORE THAN I EVER NEEDED TO KNOW!