Sonic girls WG and inflation

Well I was down my local park down from my home, and were not many people were about. I looked over a fence into a private area. The fence what keeps the public out is a 8 metre high fence, blue in colour and inside this high cages was Cream, Amy and Vanilla.
I went through the gate to see them. They were bored and wanted to do something new.  I smiled and got a basketball to play with from Creams house, and we had a game two on two.
but soon Cream said she wanted to pretend she was full of air, and I told them about Danny and his bite of the dragon. They seemed interested, and I told them more. Cream wanted to try it as she knew I had some magic powers but, usually moving objects but, I had a go anyway.
So I moved and bit her tail, she yelped but, did not run or remove her tail. Cream giggled and wanted to continue so then, I blew on her tail and she slowly inflated like a balloon. Cream wanted more, I agreed as I was getting a warm glow from her body heat, so I continued more and more, until she was taller than me, an above height to a human, and she is  as round as a balloon. When I stopped, to watch her deflate, she didn't but instead she started to get shorter but, not return to normal.

She ended up more oval shaped. Vanilla asked if she was fine. Cream replied "Yes, Mummy" and rubbed her new deflated ball like shape. Amy "Oh wow. That is amazing".
Then Amy wanted to go. "I want to do that too!" I did it and the same thing happened to her as it did to Cream. She got more round and higher.
She was more round than Cream was and I was pleased but, when I had finished she too ended up the same but, as height as me.

Next, Vanilla was very worried for them both but, was soon happy with me and then she thought if, I could reverse it, Vanilla said she might as well enjoy the experience.
Amy and Cream sat there giggling and rocking about and poking each other with what they could with their limited movements. They could just about get their arms around to wobble forwards before putting all their bodies down.

Yeah. so I started on Vanilla, putting her tail in my mouth then, blowing her longer tail more and more. She grew bigger and bigger. I felt her mass and balloon body swelling like inflating a fabric covered hot air balloon. Vanilla talked to the girls but, I did not hear what she was saying to them or what they said back. It was muffled.
I continued blowing, until she was huge and casting a shadow over the courts.

She enjoyed it and purred, so I continued until she said stop, and I did then sit and watched as the air inside of her seemed to turn into gel, water or mass, so they all ended up like really fat but, fine to talk.
I climb on Vanilla on all fours, then ask if she wanted to go to normal. She said no but did wanted more inflation so, I did. Blowing air back in her tail again and again she started to get bigger until she was 7 metres high and about 15 metres wide. We all felt the heat as the sunshine heated her up and she resonated it out. For some reason, their clothing did not rip and just stretched like it was Lycra or similar sort of material.

It was something to look at and smile. I enjoyed the inflation and well from there I blew her up more. They claps cheered and said I was amazing and a real special star.
Before they could say or tell me to return them to normal, I climbed on top of Vanilla Mountain then fell asleep on her.  I settled in on her rolls upon rolls of mass and blubber. :3