Don't mind me if I do.
Requesting Sunset Shimmer using a hypnosis stone to get revenge on the Dazzlings for hypnotizing the school. She makes them use pumps and a tank to pump their intestines full with water, air, and helium - one each -, films them saying how much they love blowing up like balloons, they throw up water or burp air or helium, finally she makes them masturbate and orgasm on camera. She gets carried away and they pop one by one spilling their guts in one final climax.
Here are their personalities:
https://mlp.fandom.com/wiki/Sunset_Shimmer#Personality
https://mlp.fandom.com/wiki/Adagio_Dazzle#Personality
https://mlp.fandom.com/wiki/Aria_Blaze#Personality
https://mlp.fandom.com/wiki/Sonata_Dusk#Personality