@Willsaber  
No they are Clearly adults

@northern haste  
They are

@Depressed Knoll, @northern haste  
Rarity lives in her boutique; house and store in one. Her parents live in a different building, where Sweetie Belle also lives, but she does live with Rarity occasionally.
 
I thought Sisterhooves Social made it very clear that Rarity lives alone without her parents, and that Sweetie Belle was going to stay over for a while.
 
Dissecting the dialogue:  
Rarity: So, now, when you say ‘a week’… is that, um, seven whole days?  
Cookie Crumbles: And six nights, I know! Such a short time to spend with your little sis.  
↑ Implies that Sweetie Belle don’t live with Rarity normally, and it would be odd if Sweetie Belle lived somewhere else without her parents. So their parents can’t be living in Rarity’s house, but rather in Sweetie Belle’s house.

@Depressed Knoll  
you mean the where rarity she was shocked that her parents were in her house also if that was her parent’s house why would sweetie tell me to get her stuff from fer dad’s Wagon?  
also  

@northern haste  
Yes, she does. Go watch Sisterhoof Social if you don’t believe me.

@Depressed Knoll  

 
no she doesn’t

@northern haste  
And her parents are long dead.
 
Also, Rarity does live with her family, but she also runs a business.

@Depressed Knoll  
it’s also the fact that none of them live in their parents house(except for AppleJack because she works at the farm)

@thps48  
I mean Fluttercord.

@Depressed Knoll  
I have no idea what that means. They’re all late teens, several ages above whatever you may imagine. Though, I suppose I’m not you and do not effectively know the ages you imagine. XD

@thps48  
But neither character is childish in a way that implies that they’re still children.

@northern haste  
Because adulthood in arcane times was determined by puberty.

@Depressed Knoll  
and it’s not the only ship I’ve seen people called pedophilia just to try and make people stop shipping it.  
and I’m not just talking about sparity

@northern haste  
I don’t like Fluttercord, and even I can tell that’s just a petty excuse to hate it.

@Depressed Knoll  
yeah that’s pretty much what it is

@northern haste  
I think it’s meant to be a cheap jab at Fluttercord.

@Background Pony #B6D9  
@Liggliluff  
@Depressed Knoll  
I seriously don’t get why people think that they are underaged children

@Liggliluff  
She is, even older than Pinkie.

Feels like the speech bubbles are in the wrong order.
 
@Background Pony #B6D9  
I thought Fluttershy was an adult.

Yeah writers, enough with the pedophilia crap, no kid wants to see Discord act like a creep around Fluttershy.

@Background Pony #516F  
I’m referring to the focused characters of the comic. And yes, I’m well aware that this is an edit. I was also referring to the undeserved hate Fosgitt get because of his art that, while isn’t the best, isn’t as bad as people try to make it. Also, I don’t bring it up everywhere.

@Meanlucario
 
You keep bring that up everywhere? Like, this is clearly a panel someone has just edited as a joke and you have to bring up shipping wars?

@Background Pony #87A9  
Seeing as it’s more of a Celestia/Discord comic, I agree.

@Background Pony #87A9  
ikr?

I’m sure Discord will get over his shock in the next five seconds