There is no specific name. Please refine your question. I could only think of catastrophic inflation.
A balloon is made of stretchable material that can expand as air is blown in. The pressure inside the balloon increases as it expands, but the material can stretch to accommodate the increased pressure without exploding.
A balloon, popcorn, a gun, gum, and a tire.
Puggi
Supernova
you can call it a balloonist
It's called the "mouthpiece" of a balloon, where you blow air into to inflate it.
A ballonist.
A hot air balloon can also be referred to as a gas balloon or a balloon aircraft. Additionally, it is sometimes simply called a balloon in casual conversation. These terms highlight its function of using heated air to achieve lift.
Chase Crew
A balloonist
Helium come on man
It is an air-balloon which can be steered in the air.