@Chaikeon  

 
That explains why Twilight’s testing it on herself and not Spike.

@Background Pony Numeral Uno
 
Keep in mind, this is taking place in a universe where the denizens willingly pick up ANYTHING (even diapers) with their mouths. I don’t think oral hygiene is a huge problem for them.
 
Regardless, this is how the commissioner wanted it to happen, so who am I to argue?

@FancyCat2008  
Comic? Only a couple. Vore stories in general? Not as high a percentage as I would like, but still a fair number- and not just the consensual vore stories that Keith mentioned, either. In fact, plenty were more along the lines of this one with the pred blissfully unaware, but still acting like a normal, intelligent person.
 
Any story benefits from having characters behave in a believable way, even if the universe they live in and the physical laws they obey is completely unrealistic. Thoughtfully constructed vore with relatable character motivations and interactions is the best vore, IMHO.
 
Of course, all that is beside the point. I’m perfectly willing to forgive a bit of contrived setup in the name of humour. Just so long as the story doesn’t take itself too seriously after opening with a rediculous setup, we’re good.
 
I’m still gonna point and laugh at the absurdity, though.

@FancyCat2008  
When they do it knowingly and willingly as an act of intimacy and trust?
 
Yeah. I have. Sadly there’s relatively not that much of it. :T

@Background Pony Numeral Uno  
Counterpoint: When have you ever read a vore comic where one character ingesting another was explained in a logical and in-character fashion?  
At least turning Twilight into a stick of gum doesn’t require AJ to suddenly develop a new fetish.
 
As a side note, I don’t want to say anything to insult AJ, but she’s never exactly been the cleverest of ponies, if you catch my drift.

@FancyCat2008  
Even if we are to accept your assertion that floor candy is awesome, there remains the problem that this candy is sitting on the floor of Twilight Sparkle’s laboratory. With all the potent alchemical reagents that have no doubt graced that particular patch of floor, this is just Grade A idiocy on AJ’s part.

@ShadowSlut  
What, you don’t eat random pieces of candy you find lying on the floor?
 
Floor candy is the best candy.

Read the story, and I’m going to enjoy this comic!