“Okay Fluttershy, you can do this”
 
One night, as Big Macintosh visited Fluttershys cottage to visit, or atleast, that is what Big Macintosh tries to make it seem like to his sister, Fluttershy asked Big Macintosh to tell her about himself. As Fluttershy talked about a future life together, Big Macintosh seemed very into the thought of Fluttershy being pregnant. He was blushing profusely, Fluttershy even spotting his once limp cock growing as he talked. Big Macintosh noticed this and hurried out of her cottage, with Fluttershy hatching a plan in her mind.
 
Fluttershy spent months puffing out her belly during her free time, breathing in tons of air, and even practicing with inflating her belly in order to please Big Mac by inflating her belly to the point of looking pregnant. Fluttershy took the hose and gently shoved it in her open marehood, she felt the hose go up her insides and stopped when it felt right. With one end of the hose in her vagina, the other end was latched to a large tank she kept in storage from Pinkie Pies surprise party for her Fluttershys birthday.
 
Fluttershy took a deep breath, Lets do this.”
 
Fluttershy slowly turned the wheel, and felt her belly fill up almost immediately. Her heart jumped as her skin began to feel tight, but she was a long was from being complete. She took another deep breath and turned the wheel even more. A large hiss came from the tank as more air escaped into Fluttershys fake womb. She looked down, her belly looked as if only a few months of holding a foal. As she began to feel tighter, she began to take deep breathes to deal with the sudden anxiety that struck her. Should she even be doing this? Would she end up popping if she did not play her cards right?
 
Fluttershy thought was stopped as she felt her belly become tighter. Her size now looked about five months in. She became very displeased with the size, but, for some reason, slightly aroused. Fluttershy rubbed ber belly, feeling the tightness of her drum excited her greatly. She suddenly turned the wheel to the max and felt her belly grow tighter at a sudden rate. She bit her lip and blushed hard as her belly now looked as if carrying a full term foal.
 
The pegasuss wings extended as she rubbed her growing belly, the feeling of her skin, the tightness of it, turned her on. Would she feel like this is she was really pregnant? Fluttershy really wanted an answer now. As she felt as she past her limit, she became to feel pleasured from the increasing size. She began to pant heavily and stand up on her hind legs, knocking over her small table as she found a place to lean of the wall.
 
“Oh yeskeep growing.” Fluttershy began to talk like a normal pony. Her belly felt very tight, on the verge of popping perhaps. But she did not feel the need to stop, and she began to yell.
 
“YES! YES! KEEP GROWING! I WANT TO BE BIG! I DONT CARE IF I BUCKING EXPLODE, JUST KEEP GRO~~”
 
“WHAT THE HAY!?”
 
Fluttershy opened her eyes, and spotted Big Macintosh, his mouth wide open in surprise. The pegasus felt her hearth beat, her belly kept growing bit by bit as she felt her pleasure disappear. She blushed heavily, and spoke back.
 
“O-ohH-hey Big Macintosh. I did not think youd be over this early, I wasjust preparing for later?”
 
Big Macintosh kept his mouth wide in surprise, Fluttershy really put herself in danger to please him?
 
Her large round belly answered his question.
 
And it definitely pleased him.
 
“FluttershyAam sorry for this.”
 
“W-what do you me~~”
 
Before Fluttershy even finished her sentence, she was tackled by Big Macintosh to the ground. She blushed heavily as she felt him kiss and lick her large belly. Big Mac left trail after trail of saliva as he made love to her massive belly. This was the greatest moment of his live. He felt her increasing tightness, and his cock grew instantly. He had the urge to hump her belly, but, he was not done shoving his face against it.
 
Fluttershy looked down at the stallion having a blast on her midsection. She felt her belly become too tight, and tried to reach for the tank. She was just out of reach of the wheel, she began to whine. She was able to pop, and Big Macintosh did not seem to notice. She whined even louder as her belly felt as tight as she could ever be, the size was large than she anticipated. Fluttershy looked as if she kept a foal inside her for about 2 years. She pushed down on her belly, which did no use. She clenched her eyes shut, waiting for herself to be splattered all over herself and her sudden guest. Until the love making stopped, and Big Macintosh quickly detached the hose from her Vagina.
 
“Uhsorry. Ah did not notice you were gettin too big.” Big Macintosh giggled.
 
Fluttershy smiled, she rubbed her large belly. It felt way too tight for her, she was lucky that nothing broke at all.
 
“Wow, I cant believe youd do this” Big Macintosh said.
 
Fluttershy blushed, I-Im sorry, I just got an idea from your last visit. I always had feelings for you, and I wanted to please you. I hope you understand.”
 
Big Macintosh rubbed her bloated belly, and laughed, Ah-am just surprised that you could hold so much.”
 
Fluttershy half shut her eyes, I can hold much more than just air, you know?” She wiggled her bottom area.
 
Big Macintoshs eyes shot wide open, he had a big idea.