From the artist:  
“Don’t you dare talk bad about Princess Celestia!” Twilight bristled. “She’s the kindest, smartest, most beautiful, most generous pony there is.”  
“Beautiful? Pfft what are you, in love with her or something?”  
“What? N-no!” Celestia’s students pale purple cheeks took on an alarming shade of red. “I just~~”  
“Twilight’s in love with her teacher. Teacher’s pet. Teacher’s pet. Twilight is a teacher’s pet.”  
“Take it back!  
“Or what? You gonna cry about it? Widdle Twiwight Spawkle gonna ~~“  
The next thing the colt knew, he was thrown tail over ears backwards with a blast of magic, landing on his belly a moment later. Twilight stood over him with a scowl on her face. “You take back what you said or I’ll..”  
“Twilight Sparkle”  
The foal’s head ducked and her shoulders rose instinctively in a submissive posture as she turned to face her teacher. She knew she’d been caught.  
“Y-yes, princess?”  
“What do you think you are doing?”  
“I uh he started it, princess. He-””  
Doing her best to mask her mirth, Celestia gave her student a stern glare. “It does not matter who started it, Twilight. You should know better than to let him get to you in the first place.”  
“But..!”  
“No buts. Go to the library and await me there.”  
The ponies ears fell back and her head lowered further as she crawled past. “Yes, Princess.”  
Nodding, Celestia waited for the filly to be well on her way before she turned to the instigator “ Colten”  
The colt that had been the one to start the scuffle gulped, “Y-yeah?”  
“Do not think you are being let off the hook. I do not tolerate bullies within my school.”  
“Y-yes Princess”  
“After class you are going to stay behind and wipe clean every chalkboard in the school without the aid of magic. I will inform your parents that you will be truant.”