Heya guys! This concept is something new I’m starting. Lately me and my bf have talked a lot about OCs and mane six kids, so we ended up shipping the ponies and making offspring.  
The obvious pairing here is PartyPie. I think it’s cute. I’ve always loved Party Favor since I saw him in the season five premiere. Ships like PokeyPie and CheesyPie never really made it for me. Party is a party pony like Pinkie, but he seems to be a bit different in personality compared to Cheese Sandwich for example, he comes off as kinda sheepish, so I thought it fit better.
 
Pinkie and Party have two kids, both colts, called Chocolate Confetti and Pop Rock(s). Chocolate is roughly a year older than Pop Rock(s). They are so close in age due to Pinkie wanting a filly, but since she never got one after two and Party didn’t want too many kids, they stopped at that number. (Or else they would end up having 8+ kids, Pinkie is crazy like that).
 
Descriptions:
 
*Chocolate Confetti is the first born son of Pinkie Pie and Party Favor. Being the son of two ponies who’s jobs it is to make others smile, he tries to follow in their footsteps by making others laugh with his…unique…brand of comedy (aka, he stinks worse than sulfur). He is energetic and social like his mother, though he has little to no regard for personal space, causing most ponies in Ponyville to find him annoying. He only has one friend in all of Ponyville and even then the two aren’t exactly bros.  
Fun fact: He’s bisexual, but everypony thinks he’s gay due to a multiple of reasons, including constantly changing his hairstyle.
 
*Pop Rock(s) is the youngest and more mature of the two brothers, trying to keep his more reckless brother in line for the most part. He’s a somewhat shy colt, wanting to appear normal and to stay out of trouble, which is kind of tough because he inherited Pinkie’s ability to break the fourth wall, something he does by complete accident. He doesn’t like standing out, but ask anypony in town and they’ll tell you that he’s the best candy maker in the whole place, his specialty being rock candy.